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#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include <setjmp.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <openssl/des.h>
#include <openssl/rand.h>
#include <time.h>
#include <math.h>
#include <pthread.h>
#include "types.h"
#include <uthash.h>
uw_unit uw_unit_v = 0;
// Socket extras
int uw_really_send(int sock, const void *buf, ssize_t len) {
while (len > 0) {
ssize_t n = send(sock, buf, len, 0);
if (n < 0)
return n;
buf += n;
len -= n;
}
return 0;
}
int uw_really_write(int fd, const void *buf, size_t len) {
while (len > 0) {
ssize_t n = write(fd, buf, len);
if (n < 0)
return n;
buf += n;
len -= n;
}
return 0;
}
// Buffers
void uw_buffer_init(size_t max, uw_buffer *b, size_t s) {
b->max = max;
b->front = b->start = malloc(s);
b->back = b->front + s;
}
void uw_buffer_free(uw_buffer *b) {
free(b->start);
}
void uw_buffer_reset(uw_buffer *b) {
b->front = b->start;
if (b->front != b->back) {
*b->front = 0;
}
}
int uw_buffer_check(uw_buffer *b, size_t extra) {
if (b->back - b->front < extra) {
size_t desired = b->front - b->start + extra, next;
char *new_heap;
next = b->back - b->start;
if (next == 0)
next = 1;
for (; next < desired; next *= 2);
if (next > b->max) {
if (desired <= b->max)
next = desired;
else
return 1;
}
new_heap = realloc(b->start, next);
b->front = new_heap + (b->front - b->start);
b->back = new_heap + next;
b->start = new_heap;
}
return 0;
}
__attribute__((noreturn)) void uw_error(uw_context, failure_kind, const char *, ...);
static void ctx_uw_buffer_check(uw_context ctx, const char *kind, uw_buffer *b, size_t extra) {
if (uw_buffer_check(b, extra))
uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
}
size_t uw_buffer_used(uw_buffer *b) {
return b->front - b->start;
}
size_t uw_buffer_avail(uw_buffer *b) {
return b->back - b->start;
}
int uw_buffer_append(uw_buffer *b, const char *s, size_t len) {
if (uw_buffer_check(b, len+1))
return 1;
memcpy(b->front, s, len);
b->front += len;
*b->front = 0;
return 0;
}
static void ctx_uw_buffer_append(uw_context ctx, const char *kind, uw_buffer *b, const char *s, size_t len) {
ctx_uw_buffer_check(ctx, kind, b, len+1);
memcpy(b->front, s, len);
b->front += len;
*b->front = 0;
}
// Persistent state types
typedef enum { UNUSED, USED } usage;
typedef struct client {
unsigned id;
usage mode;
int pass;
struct client *next;
pthread_mutex_t lock, pull_lock;
uw_buffer msgs;
int sock;
int (*send)(int sockfd, const void *buf, ssize_t len);
int (*close)(int fd);
time_t last_contact;
unsigned n_channels;
unsigned refcount;
void *data;
} client;
// Persistent client state
static client **clients, *clients_free, *clients_used;
static unsigned n_clients;
static pthread_mutex_t clients_mutex = PTHREAD_MUTEX_INITIALIZER;
size_t uw_messages_max = SIZE_MAX;
size_t uw_clients_max = SIZE_MAX;
void *uw_init_client_data();
void uw_free_client_data(void *);
void uw_copy_client_data(void *dst, void *src);
static uw_Basis_int my_rand() {
int ret, r = RAND_bytes((unsigned char *)&ret, sizeof ret);
if (r)
return abs(ret);
else
return -1;
}
static client *new_client() {
client *c;
pthread_mutex_lock(&clients_mutex);
if (clients_free) {
c = clients_free;
clients_free = clients_free->next;
}
else if (n_clients >= uw_clients_max) {
pthread_mutex_unlock(&clients_mutex);
return NULL;
} else {
++n_clients;
clients = realloc(clients, sizeof(client) * n_clients);
c = malloc(sizeof(client));
c->id = n_clients-1;
pthread_mutex_init(&c->lock, NULL);
pthread_mutex_init(&c->pull_lock, NULL);
uw_buffer_init(uw_messages_max, &c->msgs, 0);
clients[n_clients-1] = c;
}
pthread_mutex_lock(&c->lock);
c->mode = USED;
c->pass = my_rand();
c->sock = -1;
c->last_contact = time(NULL);
uw_buffer_reset(&c->msgs);
c->n_channels = 0;
c->refcount = 0;
c->data = uw_init_client_data();
pthread_mutex_unlock(&c->lock);
c->next = clients_used;
clients_used = c;
pthread_mutex_unlock(&clients_mutex);
return c;
}
static void use_client(client *c) {
pthread_mutex_lock(&c->lock);
++c->refcount;
pthread_mutex_unlock(&c->lock);
pthread_mutex_lock(&c->pull_lock);
}
static void release_client(client *c) {
pthread_mutex_unlock(&c->pull_lock);
pthread_mutex_lock(&c->lock);
--c->refcount;
pthread_mutex_unlock(&c->lock);
}
static const char begin_msgs[] = "Content-type: text/plain\r\n\r\n";
static pthread_t pruning_thread;
static int pruning_thread_initialized = 0;
static client *find_client(unsigned id) {
client *c;
int i_am_pruner = pruning_thread_initialized && pthread_equal(pruning_thread, pthread_self());
if (!i_am_pruner) pthread_mutex_lock(&clients_mutex);
if (id >= n_clients) {
if (!i_am_pruner) pthread_mutex_unlock(&clients_mutex);
return NULL;
}
c = clients[id];
if (!i_am_pruner) pthread_mutex_unlock(&clients_mutex);
return c;
}
static char *on_success = "HTTP/1.1 200 OK\r\n";
static char *on_redirect = "HTTP/1.1 303 See Other\r\n";
void uw_set_on_success(char *s) {
on_success = s;
}
static void chastise(int (*send)(int sockfd, const void *buf, ssize_t len), int sock) {
send(sock, on_success, strlen(on_success));
send(sock, begin_msgs, sizeof(begin_msgs) - 1);
send(sock, "R", 1);
close(sock);
}
void uw_client_connect(unsigned id, int pass, int sock,
int (*send)(int sockfd, const void *buf, ssize_t len),
int (*close)(int fd),
void *logger_data, uw_logger log_error) {
client *c = find_client(id);
if (c == NULL) {
chastise(send, sock);
log_error(logger_data, "Out-of-bounds client request (%u)\n", id);
return;
}
pthread_mutex_lock(&c->lock);
if (c->mode != USED) {
pthread_mutex_unlock(&c->lock);
chastise(send, sock);
log_error(logger_data, "Client request for unused slot (%u)\n", id);
return;
}
if (pass != c->pass) {
pthread_mutex_unlock(&c->lock);
chastise(send, sock);
log_error(logger_data, "Wrong client password (%u, %d)\n", id, pass);
return;
}
if (c->sock != -1) {
c->close(c->sock);
c->sock = -1;
}
c->last_contact = time(NULL);
if (uw_buffer_used(&c->msgs) > 0) {
send(sock, on_success, strlen(on_success));
send(sock, begin_msgs, sizeof(begin_msgs) - 1);
send(sock, c->msgs.start, uw_buffer_used(&c->msgs));
uw_buffer_reset(&c->msgs);
close(sock);
}
else {
c->sock = sock;
c->send = send;
c->close = close;
}
pthread_mutex_unlock(&c->lock);
}
static void free_client(client *c) {
c->mode = UNUSED;
c->pass = -1;
c->next = clients_free;
clients_free = c;
}
static uw_Basis_channel new_channel(client *c) {
uw_Basis_channel ch = {c->id, c->n_channels++};
return ch;
}
static void client_send(client *c, uw_buffer *msg, const char *script, int script_len) {
pthread_mutex_lock(&c->lock);
if (c->sock != -1) {
c->send(c->sock, on_success, strlen(on_success));
c->send(c->sock, begin_msgs, sizeof(begin_msgs) - 1);
if (script_len > 0) {
c->send(c->sock, "E\n", 2);
c->send(c->sock, script, script_len);
c->send(c->sock, "\n", 1);
}
c->send(c->sock, msg->start, uw_buffer_used(msg));
c->close(c->sock);
c->sock = -1;
} else if (uw_buffer_append(&c->msgs, msg->start, uw_buffer_used(msg)))
fprintf(stderr, "Client message buffer size exceeded");
pthread_mutex_unlock(&c->lock);
}
// Global entry points
extern void uw_global_custom();
extern void uw_init_crypto();
void uw_global_init() {
clients = malloc(0);
uw_global_custom();
uw_init_crypto();
// Fast non-cryptographic strength randomness for Sqlcache.
srandom(clock());
}
void uw_app_init(uw_app *app) {
app->client_init();
}
int uw_time = 0, uw_time_max = 0, uw_min_heap = 0;
// Single-request state
typedef struct regions {
struct regions *next;
} regions;
typedef struct {
void (*func)(void*);
void *arg;
} cleanup;
typedef struct {
unsigned client;
uw_buffer msgs;
} delta;
typedef enum {
UNSET, NORMAL, FIL, SUBFORM, SUBFORMS, ENTRY
} input_kind;
typedef struct input {
input_kind kind;
union {
char *normal;
uw_Basis_file file;
struct {
struct input *fields, *parent;
} subform;
struct {
struct input *entries, *parent;
} subforms;
struct {
struct input *fields, *next, *parent;
} entry;
} data;
} input;
typedef struct {
void *data;
uw_callback commit, rollback;
uw_callback_with_retry free;
} transactional;
typedef struct {
char *name;
void *data;
void (*free)(void*);
} global;
typedef struct uw_Sqlcache_Update {
uw_Sqlcache_Cache *cache;
char **keys;
uw_Sqlcache_Value *value;
struct uw_Sqlcache_Update *next;
} uw_Sqlcache_Update;
typedef struct uw_Sqlcache_Unlock {
pthread_rwlock_t *lock;
struct uw_Sqlcache_Unlock *next;
} uw_Sqlcache_Unlock;
struct uw_context {
uw_app *app;
int id;
char *(*get_header)(void *, const char *);
void *get_header_data;
char *(*get_env)(void *, const char *);
void *get_env_data;
uw_buffer outHeaders, page, heap, script;
int allowed_to_return_indirectly, returning_indirectly;
input *inputs, *subinputs, *cur_container;
size_t sz_inputs, n_subinputs, used_subinputs;
unsigned long long source_count;
void *db;
int transaction_started;
jmp_buf jmp_buf;
regions *regions;
cleanup *cleanup, *cleanup_front, *cleanup_back;
const char *script_header;
int needs_push, needs_sig, could_write_db, at_most_one_query;
size_t n_deltas, used_deltas;
delta *deltas;
client *client;
transactional *transactionals;
size_t n_transactionals, used_transactionals;
global *globals;
size_t n_globals;
char *current_url;
int deadline;
void *client_data;
uw_loggers *loggers;
int isPost, hasPostBody;
uw_Basis_postBody postBody;
uw_Basis_string queryString;
unsigned nextId;
int amInitializing;
char error_message[ERROR_BUF_LEN];
int usedSig, needsResig;
char *output_buffer;
size_t output_buffer_size;
// Sqlcache.
int numRecording, recordingCapacity;
int *recordingOffsets, *scriptRecordingOffsets;
uw_Sqlcache_Update *cacheUpdate;
uw_Sqlcache_Update *cacheUpdateTail;
uw_Sqlcache_Unlock *cacheUnlock;
int remoteSock;
};
size_t uw_headers_max = SIZE_MAX;
size_t uw_page_max = SIZE_MAX;
size_t uw_heap_max = SIZE_MAX;
size_t uw_script_max = SIZE_MAX;
uw_context uw_init(int id, uw_loggers *lg) {
uw_context ctx = malloc(sizeof(struct uw_context));
ctx->app = NULL;
ctx->id = id;
ctx->get_header = NULL;
ctx->get_header_data = NULL;
ctx->get_env = NULL;
ctx->get_env_data = NULL;
uw_buffer_init(uw_headers_max, &ctx->outHeaders, 1);
ctx->outHeaders.start[0] = 0;
uw_buffer_init(uw_page_max, &ctx->page, 1);
ctx->page.start[0] = 0;
ctx->allowed_to_return_indirectly = ctx->returning_indirectly = 0;
uw_buffer_init(uw_heap_max, &ctx->heap, uw_min_heap);
uw_buffer_init(uw_script_max, &ctx->script, 1);
ctx->script.start[0] = 0;
ctx->inputs = malloc(0);
ctx->cur_container = NULL;
ctx->subinputs = malloc(0);
ctx->sz_inputs = ctx->n_subinputs = ctx->used_subinputs = 0;
ctx->db = NULL;
ctx->transaction_started = 0;
ctx->regions = NULL;
ctx->cleanup_front = ctx->cleanup_back = ctx->cleanup = malloc(0);
ctx->script_header = "";
ctx->needs_push = 0;
ctx->needs_sig = 0;
ctx->could_write_db = 1;
ctx->at_most_one_query = 0;
ctx->source_count = 0;
ctx->n_deltas = ctx->used_deltas = 0;
ctx->deltas = malloc(0);
ctx->client = NULL;
ctx->error_message[0] = 0;
ctx->transactionals = malloc(0);
ctx->n_transactionals = ctx->used_transactionals = 0;
ctx->globals = malloc(0);
ctx->n_globals = 0;
ctx->current_url = "";
ctx->deadline = INT_MAX;
ctx->client_data = uw_init_client_data();
ctx->loggers = lg;
ctx->isPost = ctx->hasPostBody = 0;
ctx->queryString = NULL;
ctx->nextId = 0;
ctx->amInitializing = 0;
ctx->usedSig = 0;
ctx->needsResig = 0;
ctx->output_buffer = malloc(1);
ctx->output_buffer_size = 1;
ctx->numRecording = 0;
ctx->recordingCapacity = 0;
ctx->recordingOffsets = malloc(0);
ctx->scriptRecordingOffsets = malloc(0);
ctx->cacheUpdate = NULL;
ctx->cacheUpdateTail = NULL;
ctx->remoteSock = -1;
ctx->cacheUnlock = NULL;
return ctx;
}
size_t uw_inputs_max = SIZE_MAX;
uw_app *uw_get_app(uw_context ctx) {
return ctx->app;
}
int uw_set_app(uw_context ctx, uw_app *app) {
ctx->app = app;
if (app && app->inputs_len > ctx->sz_inputs) {
if (app->inputs_len > uw_inputs_max)
return 1;
ctx->sz_inputs = app->inputs_len;
ctx->inputs = realloc(ctx->inputs, ctx->sz_inputs * sizeof(input));
memset(ctx->inputs, 0, ctx->sz_inputs * sizeof(input));
}
return 0;
}
void uw_set_client_data(uw_context ctx, void *data) {
uw_copy_client_data(ctx->client_data, data);
}
void uw_set_db(uw_context ctx, void *db) {
ctx->db = db;
}
void *uw_get_db(uw_context ctx) {
return ctx->db;
}
uw_loggers* uw_get_loggers(struct uw_context *ctx) {
return ctx->loggers;
}
void uw_free(uw_context ctx) {
size_t i;
uw_buffer_free(&ctx->outHeaders);
uw_buffer_free(&ctx->script);
uw_buffer_free(&ctx->page);
uw_buffer_free(&ctx->heap);
free(ctx->inputs);
free(ctx->subinputs);
free(ctx->cleanup);
free(ctx->transactionals);
uw_free_client_data(ctx->client_data);
for (i = 0; i < ctx->n_deltas; ++i)
uw_buffer_free(&ctx->deltas[i].msgs);
free(ctx->deltas);
for (i = 0; i < ctx->n_globals; ++i)
if (ctx->globals[i].free)
ctx->globals[i].free(ctx->globals[i].data);
free(ctx->globals);
free(ctx->output_buffer);
free(ctx->recordingOffsets);
free(ctx->scriptRecordingOffsets);
free(ctx);
}
void uw_reset_keep_error_message(uw_context ctx) {
uw_buffer_reset(&ctx->outHeaders);
uw_buffer_reset(&ctx->script);
ctx->script.start[0] = 0;
uw_buffer_reset(&ctx->page);
ctx->allowed_to_return_indirectly = ctx->returning_indirectly = 0;
uw_buffer_reset(&ctx->heap);
ctx->regions = NULL;
ctx->cleanup_front = ctx->cleanup;
ctx->used_deltas = 0;
ctx->client = NULL;
ctx->cur_container = NULL;
ctx->used_transactionals = 0;
ctx->script_header = "";
ctx->queryString = NULL;
ctx->nextId = 0;
ctx->amInitializing = 0;
ctx->usedSig = 0;
ctx->needsResig = 0;
ctx->remoteSock = -1;
ctx->numRecording = 0;
}
void uw_reset_keep_request(uw_context ctx) {
uw_reset_keep_error_message(ctx);
ctx->error_message[0] = 0;
}
void uw_reset(uw_context ctx) {
uw_reset_keep_request(ctx);
if (ctx->app)
memset(ctx->inputs, 0, ctx->app->inputs_len * sizeof(input));
memset(ctx->subinputs, 0, ctx->n_subinputs * sizeof(input));
ctx->used_subinputs = ctx->hasPostBody = ctx->isPost = 0;
ctx->transaction_started = 0;
}
failure_kind uw_begin_init(uw_context ctx) {
int r = setjmp(ctx->jmp_buf);
if (r == 0 && ctx->app)
ctx->app->db_init(ctx);
return r;
}
void uw_close(uw_context ctx) {
ctx->app->db_close(ctx);
}
uw_Basis_string uw_Basis_requestHeader(uw_context ctx, uw_Basis_string h) {
return ctx->get_header(ctx->get_header_data, h);
}
void uw_set_headers(uw_context ctx, char *(*get_header)(void *, const char *), void *get_header_data) {
ctx->get_header = get_header;
ctx->get_header_data = get_header_data;
}
void uw_set_env(uw_context ctx, char *(*get_env)(void *, const char *), void *get_env_data) {
ctx->get_env = get_env;
ctx->get_env_data = get_env_data;
}
static void uw_set_error(uw_context ctx, const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
}
int uw_has_error(uw_context ctx) {
return ctx->error_message[0] != 0;
}
__attribute__((noreturn)) void uw_error(uw_context ctx, failure_kind fk, const char *fmt, ...) {
cleanup *cl;
va_list ap;
va_start(ap, fmt);
vsnprintf(ctx->error_message, ERROR_BUF_LEN, fmt, ap);
for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
cl->func(cl->arg);
ctx->cleanup_front = ctx->cleanup;
longjmp(ctx->jmp_buf, fk);
}
size_t uw_cleanup_max = SIZE_MAX;
void uw_push_cleanup(uw_context ctx, void (*func)(void *), void *arg) {
if (ctx->cleanup_front >= ctx->cleanup_back) {
int len = ctx->cleanup_back - ctx->cleanup, newLen;
if (len == 0)
newLen = 1;
else
newLen = len * 2;
if (newLen > uw_cleanup_max) {
if (len+1 <= uw_cleanup_max)
newLen = uw_cleanup_max;
else
uw_error(ctx, FATAL, "Exceeded limit on number of cleanup handlers");
}
ctx->cleanup = realloc(ctx->cleanup, newLen * sizeof(cleanup));
ctx->cleanup_front = ctx->cleanup + len;
ctx->cleanup_back = ctx->cleanup + newLen;
}
ctx->cleanup_front->func = func;
ctx->cleanup_front->arg = arg;
++ctx->cleanup_front;
}
char *uw_Basis_htmlifyString(uw_context, const char *);
void uw_login(uw_context ctx) {
char *id_s, *pass_s;
if ((id_s = uw_Basis_requestHeader(ctx, "UrWeb-Client"))
&& (pass_s = uw_Basis_requestHeader(ctx, "UrWeb-Pass"))) {
unsigned id = atoi(id_s);
int pass = atoi(pass_s);
client *c = find_client(id);
if (c == NULL)
uw_error(ctx, FATAL, "Unknown client ID in HTTP headers (%s, %s)", uw_Basis_htmlifyString(ctx, id_s), uw_Basis_htmlifyString(ctx, pass_s));
else {
use_client(c);
ctx->client = c;
if (c->mode != USED)
uw_error(ctx, FATAL, "Stale client ID (%u) in subscription request", id);
if (c->pass != pass)
uw_error(ctx, FATAL, "Wrong client password (%u, %d) in subscription request", id, pass);
}
} else if (ctx->needs_push) {
client *c = new_client();
if (c == NULL)
uw_error(ctx, FATAL, "Limit exceeded on number of message-passing clients");
use_client(c);
uw_copy_client_data(c->data, ctx->client_data);
ctx->client = c;
}
}
failure_kind uw_begin(uw_context ctx, char *path) {
int r = setjmp(ctx->jmp_buf);
if (r == 0)
ctx->app->handle(ctx, path);
return r;
}
static void uw_try_reconnecting(uw_context ctx) {
// Hm, error starting transaction.
// Maybe the database server died but has since come back up.
// Let's try starting from scratch.
if (ctx->db) {
ctx->app->db_close(ctx);
ctx->db = NULL;
}
ctx->app->db_init(ctx);
}
void uw_try_reconnecting_and_restarting(uw_context ctx) {
uw_try_reconnecting(ctx);
uw_error(ctx, BOUNDED_RETRY, "Restarting transaction after fixing database connection");
}
void uw_ensure_transaction(uw_context ctx) {
if (!ctx->transaction_started && !ctx->at_most_one_query) {
if (!ctx->db || ctx->app->db_begin(ctx, ctx->could_write_db)) {
uw_try_reconnecting(ctx);
if (ctx->app->db_begin(ctx, ctx->could_write_db))
uw_error(ctx, FATAL, "Error running SQL BEGIN");
}
ctx->transaction_started = 1;
} else if (ctx->at_most_one_query && !ctx->db)
uw_try_reconnecting(ctx);
}
uw_Basis_client uw_Basis_self(uw_context ctx) {
if (ctx->client == NULL)
uw_error(ctx, FATAL, "Call to Basis.self() from page that has only server-side code");
return ctx->client->id;
}
void uw_pop_cleanup(uw_context ctx) {
if (ctx->cleanup_front == ctx->cleanup)
uw_error(ctx, FATAL, "Attempt to pop from empty cleanup action stack");
--ctx->cleanup_front;
ctx->cleanup_front->func(ctx->cleanup_front->arg);
}
char *uw_error_message(uw_context ctx) {
return ctx->error_message;
}
void uw_set_error_message(uw_context ctx, const char *msg) {
strncpy(ctx->error_message, msg, sizeof(ctx->error_message));
ctx->error_message[sizeof(ctx->error_message)-1] = 0;
}
static input *INP(uw_context ctx) {
if (ctx->cur_container == NULL)
return ctx->inputs;
else if (ctx->cur_container->kind == SUBFORM)
return ctx->cur_container->data.subform.fields;
else if (ctx->cur_container->kind == ENTRY)
return ctx->cur_container->data.entry.fields;
else
uw_error(ctx, FATAL, "INP: Wrong kind (%d, %p)", ctx->cur_container->kind, ctx->cur_container);
}
static void adjust_pointer(input **ptr, input *old_start, input *new_start, size_t len) {
if (*ptr != NULL && *ptr >= old_start && *ptr < old_start + len)
*ptr += new_start - old_start;
}
static void adjust_input(input *x, input *old_start, input *new_start, size_t len) {
switch (x->kind) {
case SUBFORM:
adjust_pointer(&x->data.subform.fields, old_start, new_start, len);
adjust_pointer(&x->data.subform.parent, old_start, new_start, len);
break;
case SUBFORMS:
adjust_pointer(&x->data.subforms.entries, old_start, new_start, len);
adjust_pointer(&x->data.subforms.parent, old_start, new_start, len);
break;
case ENTRY:
adjust_pointer(&x->data.entry.fields, old_start, new_start, len);
adjust_pointer(&x->data.entry.next, old_start, new_start, len);
adjust_pointer(&x->data.entry.parent, old_start, new_start, len);
break;
default:
break;
}
}
size_t uw_subinputs_max = SIZE_MAX;
static input *check_input_space(uw_context ctx, size_t len) {
size_t i;
input *r;
if (ctx->used_subinputs + len >= ctx->n_subinputs) {
if (ctx->used_subinputs + len > uw_subinputs_max)
uw_error(ctx, FATAL, "Exceeded limit on number of subinputs");
input *new_subinputs = realloc(ctx->subinputs, sizeof(input) * (ctx->used_subinputs + len));
if (ctx->subinputs != new_subinputs) {
for (i = 0; i < ctx->used_subinputs; ++i)
adjust_input(&new_subinputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
for (i = 0; i < ctx->app->inputs_len; ++i)
adjust_input(&ctx->inputs[i], ctx->subinputs, new_subinputs, ctx->used_subinputs);
adjust_pointer(&ctx->cur_container, ctx->subinputs, new_subinputs, ctx->used_subinputs);
ctx->n_subinputs = ctx->used_subinputs + len;
ctx->subinputs = new_subinputs;
}
}
r = &ctx->subinputs[ctx->used_subinputs];
for (i = 0; i < len; ++i)
ctx->subinputs[ctx->used_subinputs++].kind = UNSET;
return r;
}
int uw_set_input(uw_context ctx, const char *name, char *value) {
//printf("Input name %s\n", name);
if (!strcasecmp(name, ".b")) {
int n = ctx->app->input_num(value);
input *inps;
if (n < 0) {
uw_set_error(ctx, "Bad subform name %s", uw_Basis_htmlifyString(ctx, value));
return -1;
}
if (n >= ctx->app->inputs_len) {
uw_set_error(ctx, "For subform name %s, index %d is out of range", uw_Basis_htmlifyString(ctx, value), n);
return -1;
}
inps = check_input_space(ctx, ctx->app->inputs_len);
INP(ctx)[n].kind = SUBFORM;
INP(ctx)[n].data.subform.parent = ctx->cur_container;
INP(ctx)[n].data.subform.fields = inps;
ctx->cur_container = &INP(ctx)[n];
} else if (!strcasecmp(name, ".e")) {
input *tmp;
if (ctx->cur_container == NULL) {
uw_set_error(ctx, "Unmatched subform closer");
return -1;
}
tmp = ctx->cur_container;
switch (tmp->kind) {
case SUBFORM:
ctx->cur_container = tmp->data.subform.parent;
tmp->data.subform.parent = NULL;
break;
case SUBFORMS:
ctx->cur_container = tmp->data.subforms.parent;
tmp->data.subforms.parent = NULL;
break;
case ENTRY:
ctx->cur_container = tmp->data.entry.parent;
break;
default:
uw_set_error(ctx, "uw_set_input: Wrong kind");
return -1;
}
} else if (!strcasecmp(name, ".s")) {
int n = ctx->app->input_num(value);
if (n < 0) {
uw_set_error(ctx, "Bad subforms name %s", uw_Basis_htmlifyString(ctx, value));
return -1;
}
if (n >= ctx->app->inputs_len) {
uw_set_error(ctx, "For subforms name %s, index %d is out of range", uw_Basis_htmlifyString(ctx, value), n);
return -1;
}
INP(ctx)[n].kind = SUBFORMS;
INP(ctx)[n].data.subforms.parent = ctx->cur_container;
INP(ctx)[n].data.subforms.entries = NULL;
ctx->cur_container = &INP(ctx)[n];
} else if (!strcasecmp(name, ".i")) {
input *inps;
if (!ctx->cur_container) {
uw_set_error(ctx, "New entry without container");
return -1;
}
if (ctx->cur_container->kind != SUBFORMS) {
uw_set_error(ctx, "Bad kind for entry parent");
return -1;
}
inps = check_input_space(ctx, ctx->app->inputs_len + 1);
inps->kind = ENTRY;
inps->data.entry.parent = ctx->cur_container;
inps->data.entry.next = ctx->cur_container->data.subforms.entries;
ctx->cur_container->data.subforms.entries = inps;
inps->data.entry.fields = inps+1;
ctx->cur_container = inps;
} else {
int n = ctx->app->input_num(name);
if (n < 0)
return 0;
if (n >= ctx->app->inputs_len) {
uw_set_error(ctx, "For input name %s, index %d is out of range", uw_Basis_htmlifyString(ctx, name), n);
return -1;
}
INP(ctx)[n].kind = NORMAL;
INP(ctx)[n].data.normal = value;
}
return 0;
}
char *uw_get_input(uw_context ctx, int n) {
if (n < 0)
uw_error(ctx, FATAL, "Negative input index %d", n);
if (n >= ctx->app->inputs_len)
uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
switch (INP(ctx)[n].kind) {
case UNSET:
return NULL;
case FIL:
uw_error(ctx, FATAL, "Tried to read a file form input as normal");
case SUBFORM:
uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
case SUBFORMS:
uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
case ENTRY:
uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
case NORMAL:
return INP(ctx)[n].data.normal;
default:
uw_error(ctx, FATAL, "Impossible input kind");
}
}
char *uw_get_optional_input(uw_context ctx, int n) {
if (n < 0)
uw_error(ctx, FATAL, "Negative input index %d", n);
if (n >= ctx->app->inputs_len)
uw_error(ctx, FATAL, "Out-of-bounds input index %d", n);
switch (INP(ctx)[n].kind) {
case UNSET:
return "";
case FIL:
uw_error(ctx, FATAL, "Tried to read a file form input as normal");
case SUBFORM:
uw_error(ctx, FATAL, "Tried to read a subform form input as normal");
case SUBFORMS:
uw_error(ctx, FATAL, "Tried to read a subforms form input as normal");
case ENTRY:
uw_error(ctx, FATAL, "Tried to read an entry form input as normal");
case NORMAL:
return INP(ctx)[n].data.normal;
default:
uw_error(ctx, FATAL, "Impossible input kind");
}
}
int uw_set_file_input(uw_context ctx, const char *name, uw_Basis_file f) {
int n = ctx->app->input_num(name);
if (n < 0) {
uw_set_error(ctx, "Bad file input name");
return -1;
}
if (n >= ctx->app->inputs_len) {
uw_set_error(ctx, "For file input name, index %d is out of range", n);
return -1;
}
ctx->inputs[n].kind = FIL;
ctx->inputs[n].data.file = f;
return 0;
}
void *uw_malloc(uw_context ctx, size_t len);
uw_Basis_file uw_get_file_input(uw_context ctx, int n) {
if (n < 0)
uw_error(ctx, FATAL, "Negative file input index %d", n);
if (n >= ctx->app->inputs_len)
uw_error(ctx, FATAL, "Out-of-bounds file input index %d", n);
switch (INP(ctx)[n].kind) {
case UNSET:
{
char *data = uw_malloc(ctx, 0);
uw_Basis_file f = {NULL, "", {0, data}};
return f;
}
case FIL:
return INP(ctx)[n].data.file;
case NORMAL:
uw_error(ctx, FATAL, "Tried to read a normal form input as files");
case SUBFORM:
uw_error(ctx, FATAL, "Tried to read a subform form input as files");
case SUBFORMS:
uw_error(ctx, FATAL, "Tried to read a subforms form input as files");
case ENTRY:
uw_error(ctx, FATAL, "Tried to read an entry form input as files");
default:
uw_error(ctx, FATAL, "Impossible input kind");
}
}
void uw_enter_subform(uw_context ctx, int n) {
if (n < 0)
uw_error(ctx, FATAL, "Negative subform index %d", n);
if (n >= ctx->app->inputs_len)
uw_error(ctx, FATAL, "Out-of-bounds subform index %d", n);
switch (INP(ctx)[n].kind) {
case UNSET:
uw_error(ctx, FATAL, "Missing subform");
case FIL:
uw_error(ctx, FATAL, "Tried to read a file form input as subform");
case NORMAL:
uw_error(ctx, FATAL, "Tried to read a normal form input as subform");
case SUBFORMS:
uw_error(ctx, FATAL, "Tried to read a subforms form input as subform");
case ENTRY:
uw_error(ctx, FATAL, "Tried to read an entry form input as subform");
case SUBFORM:
INP(ctx)[n].data.subform.parent = ctx->cur_container;
ctx->cur_container = &INP(ctx)[n];
return;
default:
uw_error(ctx, FATAL, "Impossible input kind");
}
}
void uw_leave_subform(uw_context ctx) {
input *tmp;
if (ctx->cur_container == NULL)
uw_error(ctx, FATAL, "Unmatched uw_leave_subform");
tmp = ctx->cur_container;
ctx->cur_container = tmp->data.subform.parent;
tmp->data.subform.parent = NULL;
}
int uw_enter_subforms(uw_context ctx, int n) {
input *inps;
if (n < 0)
uw_error(ctx, FATAL, "Negative subforms index %d", n);
if (n >= ctx->app->inputs_len)
uw_error(ctx, FATAL, "Out-of-bounds subforms index %d", n);
switch (INP(ctx)[n].kind) {
case UNSET:
uw_error(ctx, FATAL, "Missing subforms");
case FIL:
uw_error(ctx, FATAL, "Tried to read a file form input as subforms");
case NORMAL:
uw_error(ctx, FATAL, "Tried to read a normal form input %p as subforms", &INP(ctx)[n]);
case SUBFORM:
uw_error(ctx, FATAL, "Tried to read a subform form input as subforms");
case ENTRY:
uw_error(ctx, FATAL, "Tried to read an entry form input as subforms");
case SUBFORMS:
inps = INP(ctx)[n].data.subforms.entries;
if (inps) {
INP(ctx)[n].data.subforms.parent = ctx->cur_container;
ctx->cur_container = INP(ctx)[n].data.subforms.entries;
return 1;
} else
return 0;
default:
uw_error(ctx, FATAL, "Impossible input kind");
}
}
int uw_next_entry(uw_context ctx) {
if (ctx->cur_container == NULL)
uw_error(ctx, FATAL, "uw_next_entry(NULL)");
switch (ctx->cur_container->kind) {
case UNSET:
uw_error(ctx, FATAL, "Missing entry");
case FIL:
uw_error(ctx, FATAL, "Tried to read a file form input as entry");
case NORMAL:
uw_error(ctx, FATAL, "Tried to read a normal form input as entry");
case SUBFORM:
uw_error(ctx, FATAL, "Tried to read a subform form input as entry");
case SUBFORMS:
uw_error(ctx, FATAL, "Tried to read a subforms form input as entry");
case ENTRY:
if (ctx->cur_container->data.entry.next) {
ctx->cur_container = ctx->cur_container->data.entry.next;
return 1;
} else {
ctx->cur_container = ctx->cur_container->data.entry.parent->data.subforms.parent;
return 0;
}
default:
uw_error(ctx, FATAL, "Impossible input kind");
}
}
void uw_set_script_header(uw_context ctx, const char *s) {
ctx->script_header = s;
}
const char *uw_get_url_prefix(uw_context ctx) {
return ctx->app->url_prefix;
}
void uw_set_needs_push(uw_context ctx, int n) {
ctx->needs_push = n;
}
void uw_set_needs_sig(uw_context ctx, int n) {
ctx->needs_sig = n;
}
void uw_set_could_write_db(uw_context ctx, int n) {
ctx->could_write_db = n;
}
void uw_set_at_most_one_query(uw_context ctx, int n) {
ctx->at_most_one_query = n;
}
static void uw_buffer_check_ctx(uw_context ctx, const char *kind, uw_buffer *b, size_t extra, const char *desc) {
if (b->back - b->front < extra) {
size_t desired = b->front - b->start + extra, next;
char *new_heap;
next = b->back - b->start;
if (next == 0)
next = 1;
for (; next < desired; next *= 2);
if (next > b->max) {
if (desired <= b->max)
next = desired;
else
uw_error(ctx, FATAL, "Memory limit exceeded (%s)", kind);
}
new_heap = realloc(b->start, next);
b->front = new_heap + (b->front - b->start);
b->back = new_heap + next;
if (new_heap != b->start) {
b->start = new_heap;
uw_error(ctx, UNLIMITED_RETRY, "Couldn't allocate new %s contiguously; increasing size to %llu", desc, (unsigned long long)next);
}
b->start = new_heap;
}
}
void uw_check_heap(uw_context ctx, size_t extra) {
uw_buffer_check_ctx(ctx, "heap", &ctx->heap, extra, "heap chunk");
}
char *uw_heap_front(uw_context ctx) {
return ctx->heap.front;
}
void uw_set_heap_front(uw_context ctx, char *fr) {
ctx->heap.front = fr;
}
void uw_begin_initializing(uw_context ctx) {
ctx->amInitializing = 1;
}
void uw_end_initializing(uw_context ctx) {
ctx->amInitializing = 0;
}
static void align_heap(uw_context ctx) {
size_t posn = ctx->heap.front - ctx->heap.start;
if (posn % sizeof(void *) != 0) {
size_t bump = sizeof(void *) - posn % sizeof(void *);
uw_check_heap(ctx, bump);
ctx->heap.front += bump;
}
}
void *uw_malloc(uw_context ctx, size_t len) {
// On some architectures, it's important that all word-sized memory accesses
// be to word-aligned addresses, so we'll do a little bit of extra work here
// in anticipation of a possible word-aligned access to the address we'll
// return.
void *result;
if (ctx->amInitializing) {
int error = posix_memalign(&result, sizeof(void *), len);
if (!error)
return result;
else
uw_error(ctx, FATAL, "uw_malloc: posix_memalign() returns %d", error);
} else {
align_heap(ctx);
uw_check_heap(ctx, len);
result = ctx->heap.front;
ctx->heap.front += len;
return result;
}
}
void uw_begin_region(uw_context ctx) {
align_heap(ctx);
regions *r = (regions *) ctx->heap.front;
uw_check_heap(ctx, sizeof(regions));
ctx->heap.front += sizeof(regions);
r->next = ctx->regions;
ctx->regions = r;
}
void uw_end_region(uw_context ctx) {
regions *r = ctx->regions;
if (r == NULL)
uw_error(ctx, FATAL, "Region stack underflow");
ctx->heap.front = (char *) r;
ctx->regions = r->next;
}
void uw_memstats(uw_context ctx) {
printf("Headers: %lu/%lu\n", (unsigned long)uw_buffer_used(&ctx->outHeaders), (unsigned long)uw_buffer_avail(&ctx->outHeaders));
printf("Script: %lu/%lu\n", (unsigned long)uw_buffer_used(&ctx->script), (unsigned long)uw_buffer_avail(&ctx->script));
printf("Page: %lu/%lu\n", (unsigned long)uw_buffer_used(&ctx->page), (unsigned long)uw_buffer_avail(&ctx->page));
printf("Heap: %lu/%lu\n", (unsigned long)uw_buffer_used(&ctx->heap), (unsigned long)uw_buffer_avail(&ctx->heap));
}
int uw_pagelen(uw_context ctx) {
return ctx->page.front - ctx->page.start;
}
int uw_send(uw_context ctx, int sock) {
size_t target_length = (ctx->outHeaders.front - ctx->outHeaders.start) + 2 + (ctx->page.front - ctx->page.start);
if (ctx->output_buffer_size < target_length) {
do {
ctx->output_buffer_size *= 2;
} while (ctx->output_buffer_size < target_length);
ctx->output_buffer = realloc(ctx->output_buffer, ctx->output_buffer_size);
}
memcpy(ctx->output_buffer, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
memcpy(ctx->output_buffer + (ctx->outHeaders.front - ctx->outHeaders.start), "\r\n", 2);
memcpy(ctx->output_buffer + (ctx->outHeaders.front - ctx->outHeaders.start) + 2, ctx->page.start, ctx->page.front - ctx->page.start);
return uw_really_send(sock, ctx->output_buffer, target_length);
}
int uw_print(uw_context ctx, int fd) {
int n = uw_really_write(fd, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
if (n < 0)
return n;
n = uw_really_write(fd, "\r\n", 2);
if (n < 0)
return n;
return uw_really_write(fd, ctx->page.start, ctx->page.front - ctx->page.start);
}
int uw_output(uw_context ctx, int (*output)(void *data, char *buf, size_t len), void *data) {
int n = output(data, ctx->outHeaders.start, ctx->outHeaders.front - ctx->outHeaders.start);
if (n < 0)
return n;
n = output(data, "\r\n", 2);
if (n < 0)
return n;
return output(data, ctx->page.start, ctx->page.front - ctx->page.start);
}
static void uw_check_headers(uw_context ctx, size_t extra) {
ctx_uw_buffer_check(ctx, "headers", &ctx->outHeaders, extra);
}
void uw_write_header(uw_context ctx, uw_Basis_string s) {
int len = strlen(s);
uw_check_headers(ctx, len + 1);
strcpy(ctx->outHeaders.front, s);
ctx->outHeaders.front += len;
}
int uw_has_contentLength(uw_context ctx) {
return strstr(ctx->outHeaders.start, "Content-length: ") != NULL;
}
void uw_clear_headers(uw_context ctx) {
uw_buffer_reset(&ctx->outHeaders);
}
void uw_Basis_clear_page(uw_context ctx) {
uw_buffer_reset(&ctx->page);
}
static void uw_check_script(uw_context ctx, size_t extra) {
ctx_uw_buffer_check(ctx, "script", &ctx->script, extra);
}
void uw_write_script(uw_context ctx, uw_Basis_string s) {
int len = strlen(s);
uw_check_script(ctx, len + 1);
strcpy(ctx->script.front, s);
ctx->script.front += len;
}
const char *uw_get_real_script(uw_context ctx) {
if (strstr(ctx->outHeaders.start, "Set-Cookie: ")) {
uw_write_script(ctx, "sig=\"");
uw_write_script(ctx, ctx->app->cookie_sig(ctx));
uw_write_script(ctx, "\";");
}
return ctx->script.start;
}
uw_Basis_string uw_Basis_maybe_onload(uw_context ctx, uw_Basis_string s) {
if (s[0] == 0)
return "";
else {
char *r = uw_malloc(ctx, 11 + strlen(s));
sprintf(r, " onload='%s'", s);
return r;
}
}
uw_Basis_string uw_Basis_maybe_onunload(uw_context ctx, uw_Basis_string s) {
if (ctx->script_header[0] == 0)
return "";
else {
char *r = uw_malloc(ctx, 37 + strlen(s));
sprintf(r, " onunload='unloading=true;%s;unload()'", s);
return r;
}
}
const char *uw_Basis_get_settings(uw_context ctx, uw_unit u) {
if (ctx->client == NULL) {
if (ctx->needs_sig) {
char *sig = ctx->app->cookie_sig(ctx);
char *r = uw_malloc(ctx, strlen(sig) + 8);
sprintf(r, "sig=\"%s\";", sig);
return r;
}
else
return "";
} else {
char *sig = ctx->needs_sig ? ctx->app->cookie_sig(ctx) : "";
char *r = uw_malloc(ctx, 59 + 3 * INTS_MAX + strlen(ctx->app->url_prefix)
+ (ctx->needs_sig ? strlen(sig) + 7 : 0));
sprintf(r, "isPost=%s;client_id=%u;client_pass=%d;url_prefix=\"%s\";timeout=%d;%s%s%slistener();",
(ctx->isPost ? "true" : "false"),
ctx->client->id,
ctx->client->pass,
ctx->app->url_prefix,
ctx->app->timeout,
ctx->needs_sig ? "sig=\"" : "",
sig,
ctx->needs_sig ? "\";" : "");
return r;
}
}
uw_Basis_string uw_Basis_jsifyString(uw_context ctx, uw_Basis_string s) {
char *r, *s2;
uw_check_heap(ctx, strlen(s) * 4 + 3);
r = s2 = ctx->heap.front;
*s2++ = '"';
for (; *s; s++) {
unsigned char c = *s;
switch (c) {
case '"':
strcpy(s2, "\\\"");
s2 += 2;
break;
case '\'':
strcpy(s2, "\\047");
s2 += 4;
break;
case '\\':
strcpy(s2, "\\\\");
s2 += 2;
break;
case '<':
strcpy(s2, "\\074");
s2 += 4;
break;
case '&':
strcpy(s2, "\\046");
s2 += 4;
break;
default:
if (isprint((int)c) || c >= 128)
*s2++ = c;
else {
sprintf(s2, "\\%03o", c);
s2 += 4;
}
}
}
strcpy(s2, "\"");
ctx->heap.front = s2 + 2;
return r;
}
uw_Basis_string uw_Basis_jsifyChar(uw_context ctx, uw_Basis_char c1) {
unsigned char c = c1;
char *r, *s2;
uw_check_heap(ctx, 7);
r = s2 = ctx->heap.front;
*s2++ = '"';
switch (c) {
case '"':
strcpy(s2, "\\\"");
s2 += 2;
break;
case '\'':
strcpy(s2, "\\047");
s2 += 4;
break;
case '\\':
strcpy(s2, "\\\\");
s2 += 2;
break;
case '<':
strcpy(s2, "\\074");
s2 += 4;
break;
case '&':
strcpy(s2, "\\046");
s2 += 4;
break;
default:
if (isprint((int)c) || c >= 128)
*s2++ = c;
else {
sprintf(s2, "\\%03o", (unsigned char)c);
s2 += 4;
}
}
strcpy(s2, "\"");
ctx->heap.front = s2 + 2;
return r;
}
uw_Basis_string uw_Basis_jsifyString_ws(uw_context ctx, uw_Basis_string s) {
char *r, *s2;
uw_check_script(ctx, strlen(s) * 4 + 3);
r = s2 = ctx->script.front;
*s2++ = '"';
for (; *s; s++) {
unsigned char c = *s;
switch (c) {
case '\'':
strcpy(s2, "\\");
s2 += 2;
break;
case '\\':
strcpy(s2, "\\\\");
s2 += 2;
break;
case '<':
strcpy(s2, "\\074");
s2 += 4;
break;
case '&':
strcpy(s2, "\\046");
s2 += 4;
break;
default:
if (isprint((int)c) || c >= 128)
*s2++ = c;
else {
sprintf(s2, "\\%03o", c);
s2 += 4;
}
}
}
strcpy(s2, "\"");
ctx->script.front = s2 + 1;
return r;
}
char *uw_Basis_jsifyChannel(uw_context ctx, uw_Basis_channel chn) {
if (ctx->client == NULL || chn.cli != ctx->client->id)
return "null";
else {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX + 1);
r = ctx->heap.front;
sprintf(r, "%u%n", chn.chn, &len);
ctx->heap.front += len+1;
return r;
}
}
uw_Basis_source uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) {
int len;
size_t s_len = strlen(s);
if(ctx->id < 0)
uw_error(ctx, FATAL, "Attempt to create client source using inappropriate context");
uw_check_script(ctx, 15 + 2 * INTS_MAX + s_len);
sprintf(ctx->script.front, "s%d_%llu=sc(exec(%n", ctx->id, ctx->source_count, &len);
ctx->script.front += len;
strcpy(ctx->script.front, s);
ctx->script.front += s_len;
strcpy(ctx->script.front, "));");
ctx->script.front += 3;
uw_Basis_source r = {ctx->id, ctx->source_count++};
return r;
}
uw_unit uw_Basis_set_client_source(uw_context ctx, uw_Basis_source src, uw_Basis_string s) {
int len;
size_t s_len = strlen(s);
uw_check_script(ctx, 15 + 2 * INTS_MAX + s_len);
sprintf(ctx->script.front, "sv(s%d_%llu,exec(%n", src.context, src.source, &len);
ctx->script.front += len;
strcpy(ctx->script.front, s);
ctx->script.front += s_len;
strcpy(ctx->script.front, "));");
ctx->script.front += 3;
return uw_unit_v;
}
static void uw_check(uw_context ctx, size_t extra) {
ctx_uw_buffer_check(ctx, "page", &ctx->page, extra);
}
static void uw_writec_unsafe(uw_context ctx, char c) {
*(ctx->page.front)++ = c;
*ctx->page.front = 0;
}
void uw_writec(uw_context ctx, char c) {
uw_check(ctx, 2);
uw_writec_unsafe(ctx, c);
}
void uw_Basis_writec(uw_context ctx, char c) {
uw_writec(ctx, c);
}
static void uw_write_unsafe(uw_context ctx, const char* s) {
int len = strlen(s);
memcpy(ctx->page.front, s, len);
ctx->page.front += len;
}
void uw_write(uw_context ctx, const char* s) {
uw_check(ctx, strlen(s) + 1);
uw_write_unsafe(ctx, s);
*ctx->page.front = 0;
}
void uw_recordingStart(uw_context ctx) {
if (ctx->numRecording == ctx->recordingCapacity) {
++ctx->recordingCapacity;
ctx->recordingOffsets = realloc(ctx->recordingOffsets, sizeof(int) * ctx->recordingCapacity);
ctx->scriptRecordingOffsets = realloc(ctx->scriptRecordingOffsets, sizeof(int) * ctx->recordingCapacity);
}
ctx->recordingOffsets[ctx->numRecording] = ctx->page.front - ctx->page.start;
ctx->scriptRecordingOffsets[ctx->numRecording] = ctx->script.front - ctx->script.start;
++ctx->numRecording;
}
char *uw_recordingRead(uw_context ctx) {
char *recording = ctx->page.start + ctx->recordingOffsets[ctx->numRecording-1];
return strdup(recording);
}
char *uw_recordingReadScript(uw_context ctx) {
char *recording = ctx->script.start + ctx->scriptRecordingOffsets[--ctx->numRecording];
return strdup(recording);
}
char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
char *result;
int len;
uw_check_heap(ctx, INTS_MAX);
result = ctx->heap.front;
sprintf(result, "%lld%n", n, &len);
ctx->heap.front += len+1;
return result;
}
char *uw_Basis_attrifyFloat(uw_context ctx, uw_Basis_float n) {
char *result;
int len;
uw_check_heap(ctx, FLOATS_MAX);
result = ctx->heap.front;
sprintf(result, "%.16g%n", n, &len);
ctx->heap.front += len+1;
return result;
}
char *uw_Basis_attrifyString(uw_context ctx, uw_Basis_string s) {
int len = strlen(s);
char *result, *p;
uw_check_heap(ctx, len * 6 + 1);
result = p = ctx->heap.front;
for (; *s; s++) {
unsigned char c = *s;
if (c == '"') {
strcpy(p, """);
p += 6;
} else if (c == '&') {
strcpy(p, "&");
p += 5;
}
else
*p++ = c;
}
*p++ = 0;
ctx->heap.front = p;
return result;
}
char *uw_Basis_attrifyChar(uw_context ctx, uw_Basis_char c) {
char *result, *p;
uw_check_heap(ctx, 7);
result = p = ctx->heap.front;
if (c == '"') {
strcpy(p, """);
p += 6;
} else if (c == '&') {
strcpy(p, "&");
p += 5;
}
else
*p++ = c;
*p++ = 0;
ctx->heap.front = p;
return result;
}
char *uw_Basis_attrifyCss_class(uw_context ctx, uw_Basis_css_class s) {
return s;
}
static void uw_Basis_attrifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
int len;
sprintf(ctx->page.front, "%lld%n", n, &len);
ctx->page.front += len;
}
uw_unit uw_Basis_attrifyInt_w(uw_context ctx, uw_Basis_int n) {
uw_check(ctx, INTS_MAX);
uw_Basis_attrifyInt_w_unsafe(ctx, n);
return uw_unit_v;
}
uw_unit uw_Basis_attrifyFloat_w(uw_context ctx, uw_Basis_float n) {
int len;
uw_check(ctx, FLOATS_MAX);
sprintf(ctx->page.front, "%g%n", n, &len);
ctx->page.front += len;
return uw_unit_v;
}
uw_unit uw_Basis_attrifyString_w(uw_context ctx, uw_Basis_string s) {
uw_check(ctx, strlen(s) * 6);
for (; *s; s++) {
unsigned char c = *s;
if (c == '"')
uw_write_unsafe(ctx, """);
else if (c == '&')
uw_write_unsafe(ctx, "&");
else
uw_writec_unsafe(ctx, c);
}
return uw_unit_v;
}
uw_unit uw_Basis_attrifyChar_w(uw_context ctx, uw_Basis_char c) {
uw_check(ctx, 6);
if (c == '"')
uw_write_unsafe(ctx, """);
else if (c == '&')
uw_write_unsafe(ctx, "&");
else
uw_writec_unsafe(ctx, c);
return uw_unit_v;
}
char *uw_Basis_urlifyInt(uw_context ctx, uw_Basis_int n) {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX);
r = ctx->heap.front;
sprintf(r, "%lld%n", n, &len);
ctx->heap.front += len+1;
return r;
}
char *uw_Basis_urlifyChannel(uw_context ctx, uw_Basis_channel chn) {
if (ctx->client == NULL || chn.cli != ctx->client->id)
return "";
else {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX + 1);
r = ctx->heap.front;
sprintf(r, "%u%n", chn.chn, &len);
ctx->heap.front += len+1;
return r;
}
}
char *uw_Basis_urlifyFloat(uw_context ctx, uw_Basis_float n) {
int len;
char *r;
uw_check_heap(ctx, FLOATS_MAX);
r = ctx->heap.front;
sprintf(r, "%g%n", n, &len);
ctx->heap.front += len+1;
return r;
}
char *uw_Basis_urlifyString(uw_context ctx, uw_Basis_string s) {
char *r, *p;
if (s[0] == '\0')
return "_";
uw_check_heap(ctx, strlen(s) * 3 + 1 + !!(s[0] == '_'));
r = p = ctx->heap.front;
if (s[0] == '_')
*p++ = '_';
for (; *s; s++) {
unsigned char c = *s;
if (c == ' ')
*p++ = '+';
else if (isalnum(c))
*p++ = c;
else {
sprintf(p, ".%02X", c);
p += 3;
}
}
*p++ = 0;
ctx->heap.front = p;
return r;
}
char *uw_Basis_urlifyBool(uw_context ctx, uw_Basis_bool b) {
if (b == uw_Basis_False)
return "0";
else
return "1";
}
char *uw_Basis_urlifySource(uw_context ctx, uw_Basis_source src) {
char *r;
int len;
uw_check_heap(ctx, 2 * INTS_MAX + 2);
r = ctx->heap.front;
sprintf(r, "%d/%llu%n", src.context, src.source, &len);
ctx->heap.front += len+1;
return r;
}
static void uw_Basis_urlifyInt_w_unsafe(uw_context ctx, uw_Basis_int n) {
int len;
sprintf(ctx->page.front, "%lld%n", n, &len);
ctx->page.front += len;
}
uw_unit uw_Basis_urlifyInt_w(uw_context ctx, uw_Basis_int n) {
uw_check(ctx, INTS_MAX);
uw_Basis_urlifyInt_w_unsafe(ctx, n);
return uw_unit_v;
}
uw_unit uw_Basis_urlifyChannel_w(uw_context ctx, uw_Basis_channel chn) {
if (ctx->client != NULL && chn.cli == ctx->client->id) {
int len;
uw_check(ctx, INTS_MAX + 1);
sprintf(ctx->page.front, "%u%n", chn.chn, &len);
ctx->page.front += len;
}
return uw_unit_v;
}
uw_unit uw_Basis_urlifyFloat_w(uw_context ctx, uw_Basis_float n) {
int len;
uw_check(ctx, FLOATS_MAX);
sprintf(ctx->page.front, "%g%n", n, &len);
ctx->page.front += len;
return uw_unit_v;
}
uw_Basis_string uw_Basis_urlifyTime(uw_context ctx, uw_Basis_time t) {
return uw_Basis_urlifyInt(ctx, (uw_Basis_int)t.seconds * 1000000 + t.microseconds);
}
uw_unit uw_Basis_urlifyTime_w(uw_context ctx, uw_Basis_time t) {
return uw_Basis_urlifyInt_w(ctx, (uw_Basis_int)t.seconds * 1000000 + t.microseconds);
}
uw_unit uw_Basis_urlifyString_w(uw_context ctx, uw_Basis_string s) {
if (s[0] == '\0') {
uw_check(ctx, 1);
uw_writec_unsafe(ctx, '_');
return uw_unit_v;
}
uw_check(ctx, strlen(s) * 3 + !!(s[0] == '_'));
if (s[0] == '_')
uw_writec_unsafe(ctx, '_');
for (; *s; s++) {
unsigned char c = *s;
if (c == ' ')
uw_writec_unsafe(ctx, '+');
else if (isalnum(c))
uw_writec_unsafe(ctx, c);
else {
sprintf(ctx->page.front, ".%02X", c);
ctx->page.front += 3;
}
}
return uw_unit_v;
}
uw_unit uw_Basis_urlifyBool_w(uw_context ctx, uw_Basis_bool b) {
if (b == uw_Basis_False)
uw_writec(ctx, '0');
else
uw_writec(ctx, '1');
return uw_unit_v;
}
uw_unit uw_Basis_urlifySource_w(uw_context ctx, uw_Basis_source src) {
int len;
uw_check(ctx, 2 * INTS_MAX + 2);
sprintf(ctx->page.front, "%d/%llu%n", src.context, src.source, &len);
ctx->page.front += len;
return uw_unit_v;
}
static char *uw_unurlify_advance(char *s) {
char *new_s = strchr(s, '/');
if (new_s)
*new_s++ = 0;
else
new_s = strchr(s, 0);
return new_s;
}
uw_Basis_int uw_Basis_unurlifyInt(uw_context ctx, char **s) {
char *new_s = uw_unurlify_advance(*s);
uw_Basis_int r;
r = atoll(*s);
*s = new_s;
return r;
}
uw_Basis_float uw_Basis_unurlifyFloat(uw_context ctx, char **s) {
char *new_s = uw_unurlify_advance(*s);
uw_Basis_float r;
r = atof(*s);
*s = new_s;
return r;
}
uw_Basis_time uw_Basis_unurlifyTime(uw_context ctx, char **s) {
uw_Basis_int n = uw_Basis_unurlifyInt(ctx, s);
uw_Basis_time r = {n / 1000000, n % 1000000};
return r;
}
static uw_Basis_string uw_unurlifyString_to(int fromClient, uw_context ctx, char *r, char *s) {
char *s1, *s2 = s;
int n;
if (!fromClient) {
if (*s2 == '_')
++s2;
else if ((s2[0] == '%' || s2[0] == '.') && s2[1] == '5' && (s2[2] == 'f' || s2[2] == 'F'))
s2 += 3;
}
for (s1 = r; *s2; ++s1, ++s2) {
unsigned char c = *s2;
switch (c) {
case '+':
*s1 = ' ';
break;
case '%':
if (s2[1] == 0)
uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
if (s2[2] == 0)
uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
if (sscanf(s2+1, "%02X", &n) != 1)
uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", uw_Basis_htmlifyString(ctx, s2));
*s1 = n;
s2 += 2;
break;
case '.':
if (!fromClient) {
if (s2[1] == 0)
uw_error(ctx, FATAL, "Missing first character of escaped URL byte");
if (s2[2] == 0)
uw_error(ctx, FATAL, "Missing second character of escaped URL byte");
if (sscanf(s2+1, "%02X", &n) != 1)
uw_error(ctx, FATAL, "Invalid escaped URL byte starting at: %s", uw_Basis_htmlifyString(ctx, s2));
*s1 = n;
s2 += 2;
break;
}
default:
*s1 = c;
}
}
*s1++ = 0;
return s1;
}
uw_Basis_bool uw_Basis_unurlifyBool(uw_context ctx, char **s) {
char *new_s = uw_unurlify_advance(*s);
uw_Basis_bool r;
if (*s[0] == 0 || !strcmp(*s, "0") || !strcmp(*s, "off"))
r = uw_Basis_False;
else
r = uw_Basis_True;
*s = new_s;
return r;
}
uw_Basis_string uw_Basis_unurlifyString(uw_context ctx, char **s) {
char *new_s = uw_unurlify_advance(*s);
char *r;
int len;
len = strlen(*s);
uw_check_heap(ctx, len + 1);
r = ctx->heap.front;
ctx->heap.front = uw_unurlifyString_to(0, ctx, ctx->heap.front, *s);
*s = new_s;
return r;
}
uw_Basis_unit uw_Basis_unurlifyUnit(uw_context ctx, char **s) {
*s = uw_unurlify_advance(*s);
return uw_unit_v;
}
uw_Basis_string uw_Basis_unurlifyString_fromClient(uw_context ctx, char **s) {
char *new_s = uw_unurlify_advance(*s);
char *r;
int len;
len = strlen(*s);
uw_check_heap(ctx, len + 1);
r = ctx->heap.front;
ctx->heap.front = uw_unurlifyString_to(1, ctx, ctx->heap.front, *s);
*s = new_s;
return r;
}
char *uw_Basis_htmlifyInt(uw_context ctx, uw_Basis_int n) {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX);
r = ctx->heap.front;
sprintf(r, "%lld%n", n, &len);
ctx->heap.front += len+1;
return r;
}
uw_unit uw_Basis_htmlifyInt_w(uw_context ctx, uw_Basis_int n) {
int len;
uw_check(ctx, INTS_MAX);
sprintf(ctx->page.front, "%lld%n", n, &len);
ctx->page.front += len;
return uw_unit_v;
}
char *uw_Basis_htmlifySpecialChar(uw_context ctx, unsigned char ch) {
unsigned int n = ch;
int len;
char *r;
uw_check_heap(ctx, INTS_MAX+3);
r = ctx->heap.front;
sprintf(r, "&#%u;%n", n, &len);
ctx->heap.front += len+1;
return r;
}
uw_unit uw_Basis_htmlifySpecialChar_w(uw_context ctx, unsigned char ch) {
unsigned int n = ch;
int len;
uw_check(ctx, INTS_MAX+3);
sprintf(ctx->page.front, "&#%u;%n", n, &len);
ctx->page.front += len;
return uw_unit_v;
}
char *uw_Basis_htmlifyFloat(uw_context ctx, uw_Basis_float n) {
int len;
char *r;
uw_check_heap(ctx, FLOATS_MAX);
r = ctx->heap.front;
sprintf(r, "%g%n", n, &len);
ctx->heap.front += len+1;
return r;
}
uw_unit uw_Basis_htmlifyFloat_w(uw_context ctx, uw_Basis_float n) {
int len;
uw_check(ctx, FLOATS_MAX);
sprintf(ctx->page.front, "%g%n", n, &len);
ctx->page.front += len;
return uw_unit_v;
}
char *uw_Basis_jsifyTime(uw_context ctx, uw_Basis_time t) {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX);
r = ctx->heap.front;
sprintf(r, "%lld%n", (uw_Basis_int)t.seconds * 1000000 + t.microseconds, &len);
ctx->heap.front += len+1;
return r;
}
uw_unit uw_Basis_jsifyInt_w(uw_context ctx, uw_Basis_int n) {
int len;
uw_check(ctx, INTS_MAX);
sprintf(ctx->page.front, "%lld%n", (uw_Basis_int)n, &len);
ctx->page.front += len;
return uw_unit_v;
}
char *uw_Basis_htmlifyString(uw_context ctx, const char *s) {
char *r, *s2;
uw_check_heap(ctx, strlen(s) * 5 + 1);
for (r = s2 = ctx->heap.front; *s; s++) {
unsigned char c = *s;
switch (c) {
case '<':
strcpy(s2, "<");
s2 += 4;
break;
case '&':
strcpy(s2, "&");
s2 += 5;
break;
default:
*s2++ = c;
}
}
*s2++ = 0;
ctx->heap.front = s2;
return r;
}
uw_unit uw_Basis_htmlifyString_w(uw_context ctx, uw_Basis_string s) {
uw_check(ctx, strlen(s) * 6);
for (; *s; s++) {
unsigned char c = *s;
switch (c) {
case '<':
uw_write_unsafe(ctx, "<");
break;
case '&':
uw_write_unsafe(ctx, "&");
break;
default:
uw_writec_unsafe(ctx, c);
}
}
return uw_unit_v;
}
uw_Basis_string uw_Basis_htmlifyBool(uw_context ctx, uw_Basis_bool b) {
if (b == uw_Basis_False)
return "False";
else
return "True";
}
uw_unit uw_Basis_htmlifyBool_w(uw_context ctx, uw_Basis_bool b) {
if (b == uw_Basis_False) {
uw_check(ctx, 6);
strcpy(ctx->page.front, "False");
ctx->page.front += 5;
} else {
uw_check(ctx, 5);
strcpy(ctx->page.front, "True");
ctx->page.front += 4;
}
return uw_unit_v;
}
#define TIME_FMT "%x %X"
#define TIME_FMT_PG "%Y-%m-%d %T"
#define TIME_FMT_JS "%Y/%m/%d %T"
uw_Basis_string uw_Basis_timeToString(uw_context, uw_Basis_time);
uw_Basis_string uw_Basis_htmlifyTime(uw_context ctx, uw_Basis_time t) {
return uw_Basis_htmlifyString(ctx, uw_Basis_timeToString(ctx, t));
}
uw_unit uw_Basis_htmlifyTime_w(uw_context ctx, uw_Basis_time t) {
return uw_Basis_htmlifyString_w(ctx, uw_Basis_timeToString(ctx, t));
}
char *uw_Basis_htmlifySource(uw_context ctx, uw_Basis_source src) {
int len;
char *r;
uw_check_heap(ctx, 2 * INTS_MAX + 2);
r = ctx->heap.front;
sprintf(r, "s%d_%llu%n", src.context, src.source, &len);
ctx->heap.front += len+1;
return r;
}
uw_unit uw_Basis_htmlifySource_w(uw_context ctx, uw_Basis_source src) {
int len;
uw_check(ctx, 2 * INTS_MAX + 1);
sprintf(ctx->page.front, "s%d_%llu%n", src.context, src.source, &len);
ctx->page.front += len;
return uw_unit_v;
}
uw_Basis_char uw_Basis_strsub(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
while (n >= 0) {
if (*s == 0)
uw_error(ctx, FATAL, "Out-of-bounds strsub");
if (n == 0)
return *s;
--n;
++s;
}
uw_error(ctx, FATAL, "Negative strsub bound");
}
uw_Basis_string uw_Basis_strsuffix(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
while (n >= 0) {
if (*s == 0 || n == 0)
return s;
--n;
++s;
}
uw_error(ctx, FATAL, "Negative strsuffix bound");
}
uw_Basis_int uw_Basis_strlen(uw_context ctx, uw_Basis_string s) {
return strlen(s);
}
uw_Basis_bool uw_Basis_strlenGe(uw_context ctx, uw_Basis_string s, uw_Basis_int n) {
while (n > 0) {
if (*s == 0)
return uw_Basis_False;
--n;
++s;
}
return uw_Basis_True;
}
uw_Basis_string uw_Basis_strchr(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
return strchr(s, ch);
}
uw_Basis_int uw_Basis_strcspn(uw_context ctx, uw_Basis_string s, uw_Basis_string chs) {
return strcspn(s, chs);
}
uw_Basis_int *uw_Basis_strindex(uw_context ctx, uw_Basis_string s, uw_Basis_char ch) {
uw_Basis_string r = strchr(s, ch);
if (r == NULL)
return NULL;
else {
uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
*nr = r - s;
return nr;
}
}
uw_Basis_int *uw_Basis_strsindex(uw_context ctx, const char *haystack, const char *needle) {
uw_Basis_string r = strstr(haystack, needle);
if (r == NULL)
return NULL;
else {
uw_Basis_int *nr = uw_malloc(ctx, sizeof(uw_Basis_int));
*nr = r - haystack;
return nr;
}
}
uw_Basis_string uw_Basis_strcat(uw_context ctx, uw_Basis_string s1, uw_Basis_string s2) {
int len = uw_Basis_strlen(ctx, s1) + uw_Basis_strlen(ctx, s2) + 1;
char *s;
uw_check_heap(ctx, len);
s = ctx->heap.front;
strcpy(s, s1);
strcat(s, s2);
ctx->heap.front += len;
return s;
}
uw_Basis_string uw_Basis_substring(uw_context ctx, uw_Basis_string s, uw_Basis_int start, uw_Basis_int len) {
size_t full_len = uw_Basis_strlen(ctx, s);
if (start < 0)
uw_error(ctx, FATAL, "substring: Negative start index");
if (len < 0)
uw_error(ctx, FATAL, "substring: Negative length");
if (start + len > full_len)
uw_error(ctx, FATAL, "substring: Start index plus length is too large");
if (start + len == full_len)
return &s[start];
else {
uw_Basis_string r = uw_malloc(ctx, len+1);
memcpy(r, s+start, len);
r[len] = 0;
return r;
}
}
uw_Basis_string uw_Basis_str1(uw_context ctx, uw_Basis_char ch) {
char *r;
uw_check_heap(ctx, 2);
r = ctx->heap.front;
r[0] = ch;
r[1] = 0;
ctx->heap.front += 2;
return r;
}
uw_Basis_string uw_strdup(uw_context ctx, uw_Basis_string s1) {
int len = uw_Basis_strlen(ctx, s1) + 1;
char *s;
uw_check_heap(ctx, len);
s = ctx->heap.front;
strcpy(s, s1);
ctx->heap.front += len;
return s;
}
uw_Basis_string uw_dup_and_clear_error_message(uw_context ctx) {
if (ctx->error_message[0]) {
char *s = uw_strdup(ctx, ctx->error_message);
ctx->error_message[0] = 0;
return s;
} else
return NULL;
}
uw_Basis_string uw_maybe_strdup(uw_context ctx, uw_Basis_string s1) {
if (s1)
return uw_strdup(ctx, s1);
else
return NULL;
}
char *uw_memdup(uw_context ctx, const char *p, size_t len) {
char *r = uw_malloc(ctx, len);
memcpy(r, p, len);
return r;
}
char *uw_sqlfmtInt = "%lld::int8%n";
char *uw_Basis_sqlifyInt(uw_context ctx, uw_Basis_int n) {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX + 6);
r = ctx->heap.front;
sprintf(r, uw_sqlfmtInt, n, &len);
ctx->heap.front += len+1;
return r;
}
char *uw_Basis_sqlifyIntN(uw_context ctx, uw_Basis_int *n) {
if (n == NULL)
return "NULL";
else
return uw_Basis_sqlifyInt(ctx, *n);
}
char *uw_sqlfmtFloat = "%.16g::float8%n";
char *uw_Basis_sqlifyFloat(uw_context ctx, uw_Basis_float n) {
int len;
char *r;
uw_check_heap(ctx, FLOATS_MAX + 8);
r = ctx->heap.front;
sprintf(r, uw_sqlfmtFloat, n, &len);
ctx->heap.front += len+1;
return r;
}
char *uw_Basis_sqlifyFloatN(uw_context ctx, uw_Basis_float *n) {
if (n == NULL)
return "NULL";
else
return uw_Basis_sqlifyFloat(ctx, *n);
}
int uw_Estrings = 1, uw_sql_type_annotations = 1;
char *uw_sqlsuffixString = "::text";
char *uw_sqlsuffixChar = "::char";
uw_Basis_string uw_Basis_sqlifyString(uw_context ctx, uw_Basis_string s) {
char *r, *s2;
uw_check_heap(ctx, strlen(s) * 2 + 3 + uw_Estrings + strlen(uw_sqlsuffixString));
r = s2 = ctx->heap.front;
if (uw_Estrings)
*s2++ = 'E';
*s2++ = '\'';
for (; *s; s++) {
char c = *s;
switch (c) {
case '\'':
if (uw_Estrings)
strcpy(s2, "\\'");
else
strcpy(s2, "''");
s2 += 2;
break;
case '\\':
if (uw_Estrings) {
strcpy(s2, "\\\\");
s2 += 2;
} else
*s2++ = '\\';
break;
default:
if (isprint((int)c))
*s2++ = c;
else if (uw_Estrings) {
sprintf(s2, "\\%03o", (unsigned char)c);
s2 += 4;
}
else
*s2++ = c; // I hope this is safe to do... don't know how to support UTF-8 outside Postgres otherwise!
}
}
*s2++ = '\'';
strcpy(s2, uw_sqlsuffixString);
ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixString);
return r;
}
uw_Basis_string uw_Basis_sqlifyChar(uw_context ctx, uw_Basis_char c) {
char *r, *s2;
uw_check_heap(ctx, 5 + uw_Estrings + strlen(uw_sqlsuffixChar));
r = s2 = ctx->heap.front;
if (uw_Estrings)
*s2++ = 'E';
*s2++ = '\'';
switch (c) {
case '\'':
if (uw_Estrings)
strcpy(s2, "\\'");
else
strcpy(s2, "''");
s2 += 2;
break;
case '\\':
if (uw_Estrings) {
strcpy(s2, "\\\\");
s2 += 2;
} else
*s2++ = '\\';
break;
default:
if (isprint((int)c))
*s2++ = c;
else if (uw_Estrings) {
sprintf(s2, "\\%03o", (unsigned char)c);
s2 += 4;
}
else
uw_error(ctx, FATAL, "Non-printable character %u in char to SQLify", c);
}
*s2++ = '\'';
strcpy(s2, uw_sqlsuffixChar);
ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixChar);
return r;
}
char *uw_sqlsuffixBlob = "::bytea";
uw_Basis_string uw_Basis_sqlifyBlob(uw_context ctx, uw_Basis_blob b) {
char *r, *s2;
size_t i;
uw_check_heap(ctx, b.size * 5 + 4 + strlen(uw_sqlsuffixBlob));
r = s2 = ctx->heap.front;
if (uw_Estrings)
*s2++ = 'E';
else
*s2++ = 'X';
*s2++ = '\'';
for (i = 0; i < b.size; ++i) {
unsigned char c = b.data[i];
if (uw_Estrings) {
switch (c) {
case '\'':
strcpy(s2, "\\'");
s2 += 2;
break;
case '\\':
strcpy(s2, "\\\\\\\\");
s2 += 4;
break;
default:
if (isprint((int)c))
*s2++ = c;
else {
sprintf(s2, "\\\\%03o", c);
s2 += 5;
}
}
} else {
sprintf(s2, "%02X", c);
s2 += 2;
}
}
*s2++ = '\'';
strcpy(s2, uw_sqlsuffixBlob);
ctx->heap.front = s2 + 1 + strlen(uw_sqlsuffixBlob);
return r;
}
char *uw_Basis_sqlifyChannel(uw_context ctx, uw_Basis_channel chn) {
int len;
char *r;
unsigned long long combo = ((unsigned long long)chn.cli << 32) | chn.chn;
uw_check_heap(ctx, INTS_MAX + 7);
r = ctx->heap.front;
sprintf(r, uw_sqlfmtInt, combo, &len);
ctx->heap.front += len+1;
return r;
}
char *uw_Basis_attrifyChannel(uw_context ctx, uw_Basis_channel chn) {
int len;
char *r;
unsigned long long combo = ((unsigned long long)chn.cli << 32) | chn.chn;
uw_check_heap(ctx, INTS_MAX + 1);
r = ctx->heap.front;
sprintf(r, "%lld%n", combo, &len);
ctx->heap.front += len+1;
return r;
}
char *uw_sqlfmtUint4 = "%u::int4%n";
char *uw_Basis_sqlifyClient(uw_context ctx, uw_Basis_client cli) {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX + 7);
r = ctx->heap.front;
sprintf(r, uw_sqlfmtUint4, cli, &len);
ctx->heap.front += len+1;
return r;
}
char *uw_Basis_attrifyClient(uw_context ctx, uw_Basis_client cli) {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX + 1);
r = ctx->heap.front;
sprintf(r, "%u%n", cli, &len);
ctx->heap.front += len+1;
return r;
}
uw_Basis_string uw_Basis_sqlifyStringN(uw_context ctx, uw_Basis_string s) {
if (s == NULL)
return "NULL";
else
return uw_Basis_sqlifyString(ctx, s);
}
char *uw_Basis_sqlifyBool(uw_context ctx, uw_Basis_bool b) {
if (b == uw_Basis_False)
return "FALSE";
else
return "TRUE";
}
char *uw_Basis_sqlifyBoolN(uw_context ctx, uw_Basis_bool *b) {
if (b == NULL)
return "NULL";
else
return uw_Basis_sqlifyBool(ctx, *b);
}
char *uw_Basis_sqlifyTime(uw_context ctx, uw_Basis_time t) {
size_t len;
char *r, *s;
struct tm stm = {};
stm.tm_isdst = -1;
if (localtime_r(&t.seconds, &stm)) {
s = uw_malloc(ctx, TIMES_MAX);
len = strftime(s, TIMES_MAX, TIME_FMT_PG, &stm);
if (uw_sql_type_annotations) {
if (t.microseconds) {
r = uw_malloc(ctx, len + 21);
sprintf(r, "'%s.%06u'::timestamp", s, t.microseconds);
} else {
r = uw_malloc(ctx, len + 14);
sprintf(r, "'%s'::timestamp", s);
}
} else {
r = uw_malloc(ctx, len + 3);
sprintf(r, "'%s'", s);
}
return r;
} else
return "<Invalid time>";
}
char *uw_Basis_attrifyTime(uw_context ctx, uw_Basis_time t) {
size_t len;
char *r;
struct tm stm = {};
stm.tm_isdst = -1;
if (localtime_r(&t.seconds, &stm)) {
uw_check_heap(ctx, TIMES_MAX);
r = ctx->heap.front;
len = strftime(r, TIMES_MAX, TIME_FMT, &stm);
ctx->heap.front += len+1;
return r;
} else
return "<Invalid time>";
}
char *uw_Basis_ensqlTime(uw_context ctx, uw_Basis_time t) {
size_t len;
char *r;
struct tm stm = {};
stm.tm_isdst = -1;
if (localtime_r(&t.seconds, &stm)) {
uw_check_heap(ctx, TIMES_MAX);
r = ctx->heap.front;
len = strftime(r, TIMES_MAX-7, TIME_FMT_PG, &stm);
ctx->heap.front += len;
sprintf(ctx->heap.front, ".%06u", t.microseconds);
ctx->heap.front += 8;
return r;
} else
return "<Invalid time>";
}
char *uw_Basis_sqlifyTimeN(uw_context ctx, uw_Basis_time *t) {
if (t == NULL)
return "NULL";
else
return uw_Basis_sqlifyTime(ctx, *t);
}
char *uw_Basis_ensqlBool(uw_Basis_bool b) {
static uw_Basis_int true = 1;
static uw_Basis_int false = 0;
if (b == uw_Basis_False)
return (char *)&false;
else
return (char *)&true;
}
uw_Basis_string uw_Basis_intToString(uw_context ctx, uw_Basis_int n) {
int len;
char *r;
uw_check_heap(ctx, INTS_MAX);
r = ctx->heap.front;
sprintf(r, "%lld%n", n, &len);
ctx->heap.front += len+1;
return r;
}
uw_Basis_string uw_Basis_floatToString(uw_context ctx, uw_Basis_float n) {
int len;
char *r;
uw_check_heap(ctx, FLOATS_MAX);
r = ctx->heap.front;
sprintf(r, "%g%n", n, &len);
ctx->heap.front += len+1;
return r;
}
uw_Basis_string uw_Basis_charToString(uw_context ctx, uw_Basis_char ch) {
char *r = uw_malloc(ctx, 2);
r[0] = ch;
r[1] = 0;
return r;
}
uw_Basis_string uw_Basis_boolToString(uw_context ctx, uw_Basis_bool b) {
if (b == uw_Basis_False)
return "False";
else
return "True";
}
uw_Basis_string uw_Basis_timef(uw_context ctx, const char *fmt, uw_Basis_time t) {
size_t len;
char *r;
struct tm stm = {};
stm.tm_isdst = -1;
if (localtime_r(&t.seconds, &stm)) {
uw_check_heap(ctx, TIMES_MAX);
r = ctx->heap.front;
len = strftime(r, TIMES_MAX, fmt, &stm);
ctx->heap.front += len+1;
return r;
} else
return "<Invalid time>";
}
uw_Basis_string uw_Basis_timeToString(uw_context ctx, uw_Basis_time t) {
return uw_Basis_timef(ctx, ctx->app->time_format, t);
}
uw_Basis_int *uw_Basis_stringToInt(uw_context ctx, uw_Basis_string s) {
char *endptr;
uw_Basis_int n = strtoll(s, &endptr, 10);
if (*s != '\0' && *endptr == '\0') {
uw_Basis_int *r = uw_malloc(ctx, sizeof(uw_Basis_int));
*r = n;
return r;
} else
return NULL;
}
uw_Basis_float *uw_Basis_stringToFloat(uw_context ctx, uw_Basis_string s) {
char *endptr;
uw_Basis_float n = strtod(s, &endptr);
if (*s != '\0' && *endptr == '\0') {
uw_Basis_float *r = uw_malloc(ctx, sizeof(uw_Basis_float));
*r = n;
return r;
} else
return NULL;
}
uw_Basis_char *uw_Basis_stringToChar(uw_context ctx, uw_Basis_string s) {
if (s[0] == 0) {
uw_Basis_char *r = uw_malloc(ctx, 1);
r[0] = 0;
return r;
} else if (s[1] != 0)
return NULL;
else {
uw_Basis_char *r = uw_malloc(ctx, 1);
r[0] = s[0];
return r;
}
}
uw_Basis_bool *uw_Basis_stringToBool(uw_context ctx, uw_Basis_string s) {
static uw_Basis_bool true = uw_Basis_True;
static uw_Basis_bool false = uw_Basis_False;
if (!strcasecmp (s, "True"))
return &true;
else if (!strcasecmp (s, "False"))
return &false;
else
return NULL;
}
uw_Basis_time *uw_Basis_stringToTime(uw_context ctx, uw_Basis_string s) {
char *dot = strchr(s, '.'), *end = strchr(s, 0);
struct tm stm = {};
stm.tm_isdst = -1;
if (dot) {
*dot = 0;
if (strptime(s, TIME_FMT_PG, &stm) == end) {
*dot = '.';
uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
r->seconds = mktime(&stm);
r->microseconds = 0;
return r;
}
else {
*dot = '.';
return NULL;
}
}
else {
if (strptime(s, ctx->app->time_format, &stm) == end) {
uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
r->seconds = mktime(&stm);
r->microseconds = 0;
return r;
} else if (strptime(s, TIME_FMT_PG, &stm) == end) {
uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
r->seconds = mktime(&stm);
r->microseconds = 0;
return r;
} else if (strptime(s, TIME_FMT, &stm) == end) {
uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
r->seconds = mktime(&stm);
r->microseconds = 0;
return r;
} else if (strptime(s, TIME_FMT_JS, &stm) == end) {
uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
r->seconds = mktime(&stm);
r->microseconds = 0;
return r;
}
else
return NULL;
}
}
uw_Basis_time *uw_Basis_stringToTimef(uw_context ctx, const char *fmt, uw_Basis_string s) {
char *end = strchr(s, 0);
struct tm stm = {};
stm.tm_isdst = -1;
if (strptime(s, fmt, &stm) == end) {
uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
r->seconds = mktime(&stm);
r->microseconds = 0;
return r;
}
else
return NULL;
}
uw_Basis_int uw_Basis_stringToInt_error(uw_context ctx, uw_Basis_string s) {
char *endptr;
uw_Basis_int n = strtoll(s, &endptr, 10);
if (*s != '\0' && *endptr == '\0')
return n;
else
uw_error(ctx, FATAL, "Can't parse int: %s", uw_Basis_htmlifyString(ctx, s));
}
#include <errno.h>
uw_Basis_channel uw_Basis_stringToChannel_error(uw_context ctx, uw_Basis_string s) {
unsigned long long n;
if (sscanf(s, "%llu", &n) < 1)
uw_error(ctx, FATAL, "Can't parse channel: %s", uw_Basis_htmlifyString(ctx, s));
else {
uw_Basis_channel ch = {n >> 32, n & ((1ull << 32) - 1)};
return ch;
}
}
uw_Basis_client uw_Basis_stringToClient_error(uw_context ctx, uw_Basis_string s) {
char *endptr;
unsigned long n = strtoul(s, &endptr, 10);
if (*s != '\0' && *endptr == '\0')
return n;
else
uw_error(ctx, FATAL, "Can't parse client: %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_float uw_Basis_stringToFloat_error(uw_context ctx, uw_Basis_string s) {
char *endptr;
uw_Basis_float n = strtod(s, &endptr);
if (*s != '\0' && *endptr == '\0')
return n;
else
uw_error(ctx, FATAL, "Can't parse float: %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_char uw_Basis_stringToChar_error(uw_context ctx, uw_Basis_string s) {
if (s[0] == 0)
return 0;
else if (s[1] != 0)
uw_error(ctx, FATAL, "Can't parse char: %s", uw_Basis_htmlifyString(ctx, s));
else
return s[0];
}
uw_Basis_bool uw_Basis_stringToBool_error(uw_context ctx, uw_Basis_string s) {
if (!strcasecmp(s, "T") || !strcasecmp (s, "True"))
return uw_Basis_True;
else if (!strcasecmp(s, "F") || !strcasecmp (s, "False"))
return uw_Basis_False;
else
uw_error(ctx, FATAL, "Can't parse bool: %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_time uw_Basis_unsqlTime(uw_context ctx, uw_Basis_string s) {
char *dot = strchr(s, '.'), *end = strchr(s, 0);
struct tm stm = {};
stm.tm_isdst = -1;
if (dot) {
*dot = 0;
if (strptime(s, TIME_FMT_PG, &stm)) {
*dot = '.';
char usec[] = "000000";
int len = strlen(dot+1);
memcpy(usec, dot+1, len < 6 ? len : 6);
uw_Basis_time r = { mktime(&stm), atoi(usec) };
return r;
}
else {
*dot = '.';
uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
}
}
else {
if (strptime(s, TIME_FMT_PG, &stm) == end) {
uw_Basis_time r = { mktime(&stm) };
return r;
} else if (strptime(s, TIME_FMT, &stm) == end) {
uw_Basis_time r = { mktime(&stm) };
return r;
} else
uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
}
}
uw_Basis_time uw_Basis_stringToTime_error(uw_context ctx, uw_Basis_string s) {
char *dot = strchr(s, '.'), *end = strchr(s, 0);
struct tm stm = {};
stm.tm_isdst = -1;
if (dot) {
*dot = 0;
if (strptime(s, TIME_FMT_PG, &stm)) {
*dot = '.';
{
uw_Basis_time r = { mktime(&stm) };
return r;
}
}
else {
*dot = '.';
uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
}
}
else {
if (strptime(s, ctx->app->time_format, &stm) == end) {
uw_Basis_time r = { mktime(&stm) };
return r;
} else if (strptime(s, TIME_FMT_PG, &stm) == end) {
uw_Basis_time r = { mktime(&stm) };
return r;
} else if (strptime(s, TIME_FMT, &stm) == end) {
uw_Basis_time r = { mktime(&stm) };
return r;
} else if (strptime(s, TIME_FMT_JS, &stm) == end) {
uw_Basis_time r = { mktime(&stm) };
return r;
} else
uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
}
}
uw_Basis_time uw_Basis_stringToTimef_error(uw_context ctx, const char *fmt, uw_Basis_string s) {
char *end = strchr(s, 0);
struct tm stm = {};
stm.tm_isdst = -1;
if (strptime(s, fmt, &stm) == end) {
uw_Basis_time r = { mktime(&stm) };
return r;
} else
uw_error(ctx, FATAL, "Can't parse time: %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_blob uw_Basis_stringToBlob_error(uw_context ctx, uw_Basis_string s, size_t len) {
char *r = ctx->heap.front;
uw_Basis_blob b = {len, r};
uw_check_heap(ctx, len);
if (s[0] == '\\' && s[1] == 'x') {
s += 2;
while (*s) {
int n;
sscanf(s, "%02x", &n);
*r++ = n;
s += 2;
}
} else {
while (*s) {
if (s[0] == '\\') {
if (s[1] == '\\') {
*r++ = '\\';
s += 2;
} else if (isdigit((int)s[1]) && isdigit((int)s[2]) && isdigit((int)s[3])) {
*r++ = (s[1] - '0') * 8 * 8 + ((s[2] - '0') * 8) + (s[3] - '0');
s += 4;
}
else {
*r++ = '\\';
++s;
}
} else {
*r++ = s[0];
++s;
}
}
}
b.size = r - ctx->heap.front;
ctx->heap.front = r;
return b;
}
#define THE_PAST "expires=Sat, 01-Jan-2011 00:00:00 GMT"
uw_Basis_string uw_Basis_get_cookie(uw_context ctx, uw_Basis_string c) {
int len = strlen(c);
char *p = ctx->outHeaders.start;
while ((p = strstr(p, "\nSet-Cookie: "))) {
char *p2;
p += 13;
p2 = strchr(p, '=');
if (p2) {
size_t sz = strcspn(p2+1, ";\r\n");
if (!strncasecmp(p, c, p2 - p)) {
if (sz == 0 && strstr(p2+2, THE_PAST))
return NULL;
else {
char *ret = uw_malloc(ctx, sz + 1);
memcpy(ret, p2+1, sz);
ret[sz] = 0;
return ret;
}
}
}
}
if ((p = uw_Basis_requestHeader(ctx, "Cookie"))) {
char *p2;
while (1) {
if (!strncmp(p, c, len) && p[len] == '=') {
if ((p2 = strchr(p, ';'))) {
size_t n = p2 - (p + len);
char *r = uw_malloc(ctx, n);
memcpy(r, p + 1 + len, n-1);
r[n-1] = 0;
return r;
} else
return p + 1 + len;
} else if ((p = strchr(p, ';')))
p += 2;
else
return NULL;
}
}
return NULL;
}
static void set_cookie(uw_context ctx) {
if (ctx->usedSig)
ctx->needsResig = 1;
}
uw_unit uw_Basis_set_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c, uw_Basis_string v, uw_Basis_time *expires, uw_Basis_bool secure) {
uw_write_header(ctx, "Set-Cookie: ");
uw_write_header(ctx, c);
uw_write_header(ctx, "=");
uw_write_header(ctx, v);
uw_write_header(ctx, "; path=");
uw_write_header(ctx, prefix);
if (expires) {
char formatted[30];
struct tm tm = {};
tm.tm_isdst = -1;
gmtime_r(&expires->seconds, &tm);
strftime(formatted, sizeof formatted, "%a, %d-%b-%Y %T GMT", &tm);
uw_write_header(ctx, "; expires=");
uw_write_header(ctx, formatted);
}
if (secure)
uw_write_header(ctx, "; secure");
uw_write_header(ctx, "\r\n");
set_cookie(ctx);
return uw_unit_v;
}
uw_unit uw_Basis_clear_cookie(uw_context ctx, uw_Basis_string prefix, uw_Basis_string c) {
uw_write_header(ctx, "Set-Cookie: ");
uw_write_header(ctx, c);
uw_write_header(ctx, "=; path=");
uw_write_header(ctx, prefix);
uw_write_header(ctx, "; " THE_PAST "\r\n");
set_cookie(ctx);
return uw_unit_v;
}
size_t uw_deltas_max = SIZE_MAX;
static delta *allocate_delta(uw_context ctx, unsigned client) {
unsigned i;
delta *d;
for (i = 0; i < ctx->used_deltas; ++i)
if (ctx->deltas[i].client == client)
return &ctx->deltas[i];
if (ctx->used_deltas >= ctx->n_deltas) {
if (ctx->n_deltas + 1 > uw_deltas_max)
uw_error(ctx, FATAL, "Exceeded limit on number of deltas");
ctx->deltas = realloc(ctx->deltas, sizeof(delta) * ++ctx->n_deltas);
uw_buffer_init(uw_messages_max, &ctx->deltas[ctx->n_deltas-1].msgs, 0);
}
d = &ctx->deltas[ctx->used_deltas++];
d->client = client;
uw_buffer_reset(&d->msgs);
return d;
}
uw_Basis_channel uw_Basis_new_channel(uw_context ctx, uw_unit u) {
if (ctx->client == NULL)
uw_error(ctx, FATAL, "Attempt to create channel on request not associated with a persistent connection");
return new_channel(ctx->client);
}
uw_unit uw_Basis_send(uw_context ctx, uw_Basis_channel chn, uw_Basis_string msg) {
delta *d = allocate_delta(ctx, chn.cli);
size_t len;
int preLen;
char pre[INTS_MAX + 2];
len = strlen(msg);
sprintf(pre, "%u\n%n", chn.chn, &preLen);
ctx_uw_buffer_append(ctx, "messages", &d->msgs, pre, preLen);
ctx_uw_buffer_append(ctx, "messages", &d->msgs, msg, len);
ctx_uw_buffer_append(ctx, "messages", &d->msgs, "\n", 1);
return uw_unit_v;
}
int uw_rollback(uw_context ctx, int will_retry) {
int i;
cleanup *cl;
if (ctx->client)
release_client(ctx->client);
for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
cl->func(cl->arg);
ctx->cleanup_front = ctx->cleanup;
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].rollback != NULL)
ctx->transactionals[i].rollback(ctx->transactionals[i].data);
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].free)
ctx->transactionals[i].free(ctx->transactionals[i].data, will_retry);
if (ctx->app && ctx->transaction_started) {
ctx->transaction_started = 0;
return ctx->app->db_rollback(ctx);
} else
return 0;
}
const char uw_begin_xhtml[] = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">";
const char uw_begin_html5[] = "<!DOCTYPE html><html>";
extern int uw_hash_blocksize;
static const char sig_intro[] = "<input type=\"hidden\" name=\"Sig\" value=\"";
static char *find_sig(char *haystack) {
int i;
char *s = strstr(haystack, sig_intro);
if (!s || strlen(haystack) - (s - haystack) - (sizeof sig_intro - 1) < uw_hash_blocksize*2+1)
return NULL;
s += sizeof sig_intro - 1;
for (i = 0; i < uw_hash_blocksize*2; ++i)
if (!isxdigit((int)s[i]))
return NULL;
if (s[i] != '"')
return NULL;
return s;
}
static pthread_mutex_t message_send_mutex = PTHREAD_MUTEX_INITIALIZER;
int uw_commit(uw_context ctx) {
int i;
char *sig;
if (uw_has_error(ctx)) {
uw_rollback(ctx, 0);
return 0;
}
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].rollback != NULL)
if (ctx->transactionals[i].commit) {
ctx->transactionals[i].commit(ctx->transactionals[i].data);
if (uw_has_error(ctx)) {
uw_rollback(ctx, 0);
return 0;
}
}
// Here's an important lock to provide the abstraction that all messages from one transaction are sent as an atomic unit.
if (ctx->used_deltas > 0)
pthread_mutex_lock(&message_send_mutex);
if (ctx->transaction_started) {
int code = ctx->app->db_commit(ctx);
if (code) {
if (ctx->used_deltas > 0)
pthread_mutex_unlock(&message_send_mutex);
if (ctx->client)
release_client(ctx->client);
if (code == -1) {
// This case is for a serialization failure, which is not really an "error."
// The transaction will restart, so we should rollback any transactionals
// that triggered above.
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].rollback != NULL)
ctx->transactionals[i].rollback(ctx->transactionals[i].data);
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].free)
ctx->transactionals[i].free(ctx->transactionals[i].data, 1);
return 1;
}
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].free)
ctx->transactionals[i].free(ctx->transactionals[i].data, 0);
uw_set_error_message(ctx, "Error running SQL COMMIT");
return 0;
}
}
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].rollback == NULL)
if (ctx->transactionals[i].commit) {
ctx->transactionals[i].commit(ctx->transactionals[i].data);
if (uw_has_error(ctx)) {
if (ctx->used_deltas > 0)
pthread_mutex_unlock(&message_send_mutex);
if (ctx->client)
release_client(ctx->client);
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].rollback != NULL)
ctx->transactionals[i].rollback(ctx->transactionals[i].data);
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].free)
ctx->transactionals[i].free(ctx->transactionals[i].data, 0);
return 0;
}
}
for (i = 0; i < ctx->used_deltas; ++i) {
delta *d = &ctx->deltas[i];
client *c = find_client(d->client);
assert (c != NULL);
assert(c->mode == USED);
client_send(c, &d->msgs, ctx->script.start, uw_buffer_used(&ctx->script));
}
if (ctx->used_deltas > 0)
pthread_mutex_unlock(&message_send_mutex);
if (ctx->client)
release_client(ctx->client);
for (i = ctx->used_transactionals-1; i >= 0; --i)
if (ctx->transactionals[i].free)
ctx->transactionals[i].free(ctx->transactionals[i].data, 0);
uw_check(ctx, 1);
*ctx->page.front = 0;
if (!ctx->returning_indirectly
&& (ctx->app->is_html5
? !strncmp(ctx->page.start, uw_begin_html5, sizeof uw_begin_html5 - 1)
: !strncmp(ctx->page.start, uw_begin_xhtml, sizeof uw_begin_xhtml - 1))) {
char *s;
// Splice script data into appropriate part of page, also adding <head> if needed.
s = ctx->page.start + (ctx->app->is_html5 ? sizeof uw_begin_html5 - 1 : sizeof uw_begin_xhtml - 1);
s = strchr(s, '<');
if (s == NULL) {
// Weird. Document has no tags!
uw_write(ctx, "<head></head><body></body>");
uw_check(ctx, 1);
*ctx->page.front = 0;
} else if (!strncmp(s, "<head>", 6)) {
// <head> is present. Let's add the <script> tags immediately after it.
// Any freeform JavaScript to include?
if (uw_buffer_used(&ctx->script) > 0) {
size_t lenH = strlen(ctx->script_header), len = uw_buffer_used(&ctx->script);
size_t lenP = lenH + 40 + len;
char *start = s + 6, *oldPage = ctx->page.start;
ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->page) + lenP);
start += ctx->page.start - oldPage;
memmove(start + lenP, start, uw_buffer_used(&ctx->page) - (start - ctx->page.start) + 1);
ctx->page.front += lenP;
memcpy(start, ctx->script_header, lenH);
memcpy(start + lenH, "<script type=\"text/javascript\">", 31);
memcpy(start + lenH + 31, ctx->script.start, len);
memcpy(start + lenH + 31 + len, "</script>", 9);
} else {
size_t lenH = strlen(ctx->script_header);
char *start = s + 6, *oldPage = ctx->page.start;
ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->page) + lenH);
start += ctx->page.start - oldPage;
memmove(start + lenH, start, uw_buffer_used(&ctx->page) - (start - ctx->page.start) + 1);
ctx->page.front += lenH;
memcpy(start, ctx->script_header, lenH);
}
} else {
// No <head>. At this point, add it, with <script> tags inside.
if (uw_buffer_used(&ctx->script) > 0) {
size_t lenH = strlen(ctx->script_header), len = uw_buffer_used(&ctx->script);
size_t lenP = lenH + 53 + len;
char *start = s, *oldPage = ctx->page.start;
ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->page) + lenP);
start += ctx->page.start - oldPage;
memmove(start + lenP, start, uw_buffer_used(&ctx->page) - (start - ctx->page.start) + 1);
ctx->page.front += lenP;
memcpy(start, "<head>", 6);
memcpy(start + 6, ctx->script_header, lenH);
memcpy(start + 6 + lenH, "<script type=\"text/javascript\">", 31);
memcpy(start + 6 + lenH + 31, ctx->script.start, len);
memcpy(start + 6 + lenH + 31 + len, "</script></head>", 16);
} else {
size_t lenH = strlen(ctx->script_header);
size_t lenP = lenH + 13;
char *start = s, *oldPage = ctx->page.start;
ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->page) + lenP);
start += ctx->page.start - oldPage;
memmove(start + lenP, start, uw_buffer_used(&ctx->page) - (start - ctx->page.start) + 1);
ctx->page.front += lenP;
memcpy(start, "<head>", 6);
memcpy(start + 6, ctx->script_header, lenH);
memcpy(start + 6 + lenH, "</head>", 7);
}
}
}
if (ctx->needsResig) {
sig = find_sig(ctx->page.start);
if (sig) {
char *realsig = ctx->app->cookie_sig(ctx);
do {
memcpy(sig, realsig, 2*uw_hash_blocksize);
sig = find_sig(sig);
} while (sig);
}
}
return 0;
}
size_t uw_transactionals_max = SIZE_MAX;
int uw_register_transactional(uw_context ctx, void *data, uw_callback commit, uw_callback rollback,
uw_callback_with_retry free) {
if (ctx->used_transactionals >= ctx->n_transactionals) {
if (ctx->used_transactionals+1 > uw_transactionals_max)
// Exceeded limit on number of transactionals.
return -1;
ctx->transactionals = realloc(ctx->transactionals, sizeof(transactional) * (ctx->used_transactionals+1));
++ctx->n_transactionals;
}
ctx->transactionals[ctx->used_transactionals].data = data;
ctx->transactionals[ctx->used_transactionals].commit = commit;
ctx->transactionals[ctx->used_transactionals].rollback = rollback;
ctx->transactionals[ctx->used_transactionals++].free = free;
return 0;
}
// "Garbage collection"
void uw_do_expunge(uw_context ctx, uw_Basis_client cli, void *data);
void uw_post_expunge(uw_context ctx, void *data);
static failure_kind uw_expunge(uw_context ctx, uw_Basis_client cli, void *data) {
int r = setjmp(ctx->jmp_buf);
if (r == 0)
uw_do_expunge(ctx, cli, data);
else
ctx->app->db_rollback(ctx);
uw_post_expunge(ctx, data);
return r;
}
void uw_prune_clients(uw_context ctx) {
client *c, *next, *prev = NULL;
time_t cutoff;
cutoff = time(NULL) - ctx->app->timeout;
pthread_mutex_lock(&clients_mutex);
pruning_thread = pthread_self();
pruning_thread_initialized = 1;
for (c = clients_used; c; c = next) {
next = c->next;
pthread_mutex_lock(&c->lock);
if (c->last_contact < cutoff && c->refcount == 0) {
failure_kind fk = UNLIMITED_RETRY;
if (prev)
prev->next = next;
else
clients_used = next;
while (fk == UNLIMITED_RETRY) {
uw_reset(ctx);
fk = uw_expunge(ctx, c->id, c->data);
if (fk == UNLIMITED_RETRY)
printf("Unlimited retry during expunge: %s\n", uw_error_message(ctx));
}
if (fk == SUCCESS)
free_client(c);
else
fprintf(stderr, "Expunge blocked by error: %s\n", uw_error_message(ctx));
}
else
prev = c;
pthread_mutex_unlock(&c->lock);
}
pthread_mutex_unlock(&clients_mutex);
}
failure_kind uw_initialize(uw_context ctx) {
int r = setjmp(ctx->jmp_buf);
if (r == 0) {
uw_ensure_transaction(ctx);
ctx->app->initializer(ctx);
if (uw_commit(ctx))
uw_error(ctx, FATAL, "Error running SQL COMMIT");
}
return r;
}
static int url_bad(uw_Basis_string s) {
for (; *s; ++s)
if (!isgraph((int)*s))
return 1;
return 0;
}
uw_Basis_string uw_Basis_bless(uw_context ctx, uw_Basis_string s) {
if (url_bad(s))
uw_error(ctx, FATAL, "Invalid URL %s", uw_Basis_htmlifyString(ctx, s));
if (ctx->app->check_url(s))
return s;
else
uw_error(ctx, FATAL, "Disallowed URL %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_string uw_Basis_checkUrl(uw_context ctx, uw_Basis_string s) {
if (url_bad(s))
return NULL;
if (ctx->app->check_url(s))
return s;
else
return NULL;
}
static int mime_format(const char *s) {
for (; *s; ++s)
if (!isalnum((int)*s) && *s != '/' && *s != '-' && *s != '.' && *s != '+')
return 0;
return 1;
}
uw_Basis_string uw_Basis_blessMime(uw_context ctx, uw_Basis_string s) {
if (!mime_format(s))
uw_error(ctx, FATAL, "MIME type \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
if (ctx->app->check_mime(s))
return s;
else
uw_error(ctx, FATAL, "Disallowed MIME type %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_string uw_Basis_checkMime(uw_context ctx, uw_Basis_string s) {
if (!mime_format(s))
return NULL;
if (ctx->app->check_mime(s))
return s;
else
return NULL;
}
uw_Basis_string uw_Basis_blessRequestHeader(uw_context ctx, uw_Basis_string s) {
if (!mime_format(s))
uw_error(ctx, FATAL, "Request header \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
if (ctx->app->check_requestHeader(s))
return s;
else
uw_error(ctx, FATAL, "Disallowed request header %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_string uw_Basis_checkRequestHeader(uw_context ctx, uw_Basis_string s) {
if (!mime_format(s))
return NULL;
if (ctx->app->check_requestHeader(s))
return s;
else
return NULL;
}
uw_Basis_string uw_Basis_blessResponseHeader(uw_context ctx, uw_Basis_string s) {
if (!mime_format(s))
uw_error(ctx, FATAL, "Response header \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
if (ctx->app->check_responseHeader(s))
return s;
else
uw_error(ctx, FATAL, "Disallowed response header %s", uw_Basis_htmlifyString(ctx, s));
}
static int envVar_format(const char *s) {
for (; *s; ++s)
if (!isalnum((int)*s) && *s != '_' && *s != '.')
return 0;
return 1;
}
uw_Basis_string uw_Basis_checkResponseHeader(uw_context ctx, uw_Basis_string s) {
if (!envVar_format(s))
return NULL;
if (ctx->app->check_responseHeader(s))
return s;
else
return NULL;
}
uw_Basis_string uw_Basis_blessEnvVar(uw_context ctx, uw_Basis_string s) {
if (!envVar_format(s))
uw_error(ctx, FATAL, "Environment variable \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
if (ctx->app->check_envVar(s))
return s;
else
uw_error(ctx, FATAL, "Disallowed environment variable %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_string uw_Basis_checkEnvVar(uw_context ctx, uw_Basis_string s) {
if (!mime_format(s))
return NULL;
if (ctx->app->check_envVar(s))
return s;
else
return NULL;
}
static int meta_format(const char *s) {
for (; *s; ++s)
if (!isalpha((int)*s) && *s != '-')
return 0;
return 1;
}
uw_Basis_string uw_Basis_blessMeta(uw_context ctx, uw_Basis_string s) {
if (!meta_format(s))
uw_error(ctx, FATAL, "Meta name \"%s\" contains invalid character", uw_Basis_htmlifyString(ctx, s));
if (ctx->app->check_meta(s))
return s;
else
uw_error(ctx, FATAL, "Disallowed meta name %s", uw_Basis_htmlifyString(ctx, s));
}
uw_Basis_string uw_Basis_checkMeta(uw_context ctx, uw_Basis_string s) {
if (!meta_format(s))
return NULL;
if (ctx->app->check_meta(s))
return s;
else
return NULL;
}
uw_Basis_string uw_Basis_getHeader(uw_context ctx, uw_Basis_string name) {
return uw_Basis_requestHeader(ctx, name);
}
static int mime_value_format(const char *s) {
for (; *s; ++s)
if (*s == '\r' || *s == '\n')
return 0;
return 1;
}
uw_unit uw_Basis_setHeader(uw_context ctx, uw_Basis_string name, uw_Basis_string value) {
if (!mime_value_format(value))
uw_error(ctx, FATAL, "Invalid value for HTTP response header");
uw_write_header(ctx, name);
uw_write_header(ctx, ": ");
uw_write_header(ctx, value);
uw_write_header(ctx, "\r\n");
return uw_unit_v;
}
uw_Basis_string uw_Basis_getenv(uw_context ctx, uw_Basis_string name) {
if (ctx->get_env)
return ctx->get_env(ctx->get_env_data, name);
else
return getenv(name);
}
uw_Basis_string uw_unnull(uw_Basis_string s) {
return s ? s : "";
}
uw_Basis_string uw_Basis_makeSigString(uw_context ctx, uw_Basis_string sig) {
uw_Basis_string r = uw_malloc(ctx, 2 * uw_hash_blocksize + 1);
int i;
for (i = 0; i < uw_hash_blocksize; ++i)
sprintf(&r[2*i], "%.02X", ((unsigned char *)sig)[i]);
return r;
}
/* This bit of crafty code is intended to prevent GCC from performing
* optimizations that would enable timing attacks. See:
* http://www.impredicative.com/pipermail/ur/2011-July/000659.html
*/
int uw_streq(uw_Basis_string s1, uw_Basis_string s2) {
int i, x = 0, len1 = strlen(s1);
if (len1 != strlen(s2)) return 0;
for (i = 0; i < len1; ++i) {
__asm__ __volatile__ ("");
x |= s1[i] ^ s2[i];
}
return x == 0;
}
uw_Basis_string uw_Basis_sigString(uw_context ctx, uw_unit u) {
ctx->usedSig = 1;
return ctx->app->cookie_sig(ctx);
}
uw_Basis_string uw_Basis_fileName(uw_context ctx, uw_Basis_file f) {
return f.name;
}
uw_Basis_string uw_Basis_fileMimeType(uw_context ctx, uw_Basis_file f) {
return f.type;
}
uw_Basis_int uw_Basis_blobSize(uw_context ctx, uw_Basis_blob b) {
return b.size;
}
uw_Basis_blob uw_Basis_textBlob(uw_context ctx, uw_Basis_string s) {
uw_Basis_blob b = {strlen(s), s};
return b;
}
uw_Basis_blob uw_Basis_fileData(uw_context ctx, uw_Basis_file f) {
return f.data;
}
uw_Basis_string uw_Basis_postType(uw_context ctx, uw_Basis_postBody pb) {
return pb.type;
}
uw_Basis_string uw_Basis_postData(uw_context ctx, uw_Basis_postBody pb) {
return pb.data;
}
static char *old_headers(uw_context ctx) {
if (uw_buffer_used(&ctx->outHeaders) == 0)
return NULL;
else {
char *s;
int is_good;
if (strncasecmp(ctx->outHeaders.start, "Content-type: ", 14)) {
s = strchr(ctx->outHeaders.start, '\n');
is_good = !strncasecmp(s+1, "Content-type: ", 14);
} else {
s = ctx->outHeaders.start;
is_good = 1;
}
if (!is_good)
return NULL;
else {
s = strchr(s+15, '\n');
if (s == NULL)
return NULL;
else
return uw_strdup(ctx, s+1);
}
}
}
__attribute__((noreturn)) void uw_return_blob(uw_context ctx, uw_Basis_blob b, uw_Basis_string mimeType) {
cleanup *cl;
int len;
char *oldh;
if (!ctx->allowed_to_return_indirectly)
uw_error(ctx, FATAL, "Tried to return a blob from an RPC");
ctx->returning_indirectly = 1;
oldh = old_headers(ctx);
uw_buffer_reset(&ctx->outHeaders);
uw_buffer_reset(&ctx->page);
uw_write_header(ctx, on_success);
uw_write_header(ctx, "Content-Type: ");
uw_write_header(ctx, mimeType);
uw_write_header(ctx, "\r\nContent-length: ");
ctx_uw_buffer_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
sprintf(ctx->outHeaders.front, "%lu%n", (unsigned long)b.size, &len);
ctx->outHeaders.front += len;
uw_write_header(ctx, "\r\n");
if (oldh) uw_write_header(ctx, oldh);
ctx_uw_buffer_append(ctx, "page", &ctx->page, b.data, b.size);
for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
cl->func(cl->arg);
ctx->cleanup_front = ctx->cleanup;
longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
}
void uw_replace_page(uw_context ctx, const char *data, size_t size) {
uw_buffer_reset(&ctx->page);
ctx_uw_buffer_append(ctx, "page", &ctx->page, data, size);
}
__attribute__((noreturn)) void uw_return_blob_from_page(uw_context ctx, uw_Basis_string mimeType) {
cleanup *cl;
int len;
char *oldh;
if (!ctx->allowed_to_return_indirectly)
uw_error(ctx, FATAL, "Tried to return a blob from an RPC");
ctx->returning_indirectly = 1;
oldh = old_headers(ctx);
uw_buffer_reset(&ctx->outHeaders);
uw_write_header(ctx, on_success);
uw_write_header(ctx, "Content-Type: ");
uw_write_header(ctx, mimeType);
uw_write_header(ctx, "\r\nContent-length: ");
ctx_uw_buffer_check(ctx, "headers", &ctx->outHeaders, INTS_MAX);
sprintf(ctx->outHeaders.front, "%lu%n", (unsigned long)uw_buffer_used(&ctx->page), &len);
ctx->outHeaders.front += len;
uw_write_header(ctx, "\r\n");
if (oldh) uw_write_header(ctx, oldh);
for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
cl->func(cl->arg);
ctx->cleanup_front = ctx->cleanup;
longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
}
__attribute__((noreturn)) void uw_redirect(uw_context ctx, uw_Basis_string url) {
cleanup *cl;
char *s;
char *oldh;
if (!ctx->allowed_to_return_indirectly)
uw_error(ctx, FATAL, "Tried to redirect from an RPC");
ctx->returning_indirectly = 1;
oldh = old_headers(ctx);
uw_buffer_reset(&ctx->page);
ctx_uw_buffer_check(ctx, "page", &ctx->page, uw_buffer_used(&ctx->outHeaders)+1);
memcpy(ctx->page.start, ctx->outHeaders.start, uw_buffer_used(&ctx->outHeaders));
ctx->page.start[uw_buffer_used(&ctx->outHeaders)] = 0;
uw_buffer_reset(&ctx->outHeaders);
if (on_success[0])
uw_write_header(ctx, on_redirect);
else
uw_write_header(ctx, "Status: 303 See Other\r\n");
s = on_success[0] ? strchr(ctx->page.start, '\n') : ctx->page.start;
if (s) {
char *s2;
if (s[0] == '\n') ++s;
for (; (s2 = strchr(s, '\n')); s = s2+1) {
*s2 = 0;
if (!strncmp(s, "Set-Cookie: ", 12)) {
uw_write_header(ctx, s);
uw_write_header(ctx, "\n");
}
}
}
uw_write_header(ctx, "Location: ");
uw_write_header(ctx, url);
uw_write_header(ctx, "\r\n\r\n");
if (oldh) uw_write_header(ctx, oldh);
for (cl = ctx->cleanup; cl < ctx->cleanup_front; ++cl)
cl->func(cl->arg);
ctx->cleanup_front = ctx->cleanup;
longjmp(ctx->jmp_buf, RETURN_INDIRECTLY);
}
uw_Basis_string uw_Basis_unAs(uw_context ctx, uw_Basis_string s) {
uw_Basis_string ret = uw_malloc(ctx, strlen(s) + 1), r = ret;
for (; *s; ++s) {
if (s[0] == '\'') {
*r++ = '\'';
for (++s; *s; ++s) {
if (s[0] == '\'') {
*r++ = '\'';
break;
} else if (s[0] == '\\') {
*r++ = '\\';
*r++ = s[1];
++s;
} else
*r++ = s[0];
}
if (*s == 0) break;
} else if (s[0] == 'T' && s[1] == '_' && s[2] == 'T' && s[3] == '.')
s += 3;
else
*r++ = s[0];
}
*r = 0;
return ret;
}
uw_Basis_string uw_Basis_mstrcat(uw_context ctx, ...) {
va_list ap;
size_t len = 1;
char *s, *r, *s2;
va_start(ap, ctx);
for (s = va_arg(ap, char*); s; s = va_arg(ap, char*))
len += strlen(s);
va_end(ap);
r = uw_malloc(ctx, len);
va_start(ap, ctx);
for (s2 = r, s = va_arg(ap, char*); s; s = va_arg(ap, char*))
while (*s)
*s2++ = *s++;
va_end(ap);
*s2 = 0;
return r;
}
const uw_Basis_time uw_Basis_minTime = {};
uw_Basis_time uw_Basis_now(uw_context ctx) {
uw_Basis_time r = { time(NULL) };
return r;
}
uw_Basis_time uw_Basis_addSeconds(uw_context ctx, uw_Basis_time tm, uw_Basis_int n) {
tm.seconds += n;
return tm;
}
uw_Basis_int uw_Basis_diffInSeconds(uw_context ctx, uw_Basis_time tm1, uw_Basis_time tm2) {
return difftime(tm2.seconds, tm1.seconds);
}
uw_Basis_int uw_Basis_toMilliseconds(uw_context ctx, uw_Basis_time tm) {
return tm.seconds * 1000 + tm.microseconds / 1000;
}
uw_Basis_time uw_Basis_fromMilliseconds(uw_context ctx, uw_Basis_int n) {
uw_Basis_time tm = {n / 1000, n % 1000 * 1000};
return tm;
}
uw_Basis_int uw_Basis_diffInMilliseconds(uw_context ctx, uw_Basis_time tm1, uw_Basis_time tm2) {
return uw_Basis_toMilliseconds(ctx, tm2) - uw_Basis_toMilliseconds(ctx, tm1);
}
uw_Basis_int uw_Basis_toSeconds(uw_context ctx, uw_Basis_time tm) {
return tm.seconds;
}
uw_Basis_time uw_Basis_fromDatetime(uw_context ctx, uw_Basis_int year, uw_Basis_int month, uw_Basis_int day, uw_Basis_int hour, uw_Basis_int minute, uw_Basis_int second) {
struct tm tm = { .tm_year = year - 1900, .tm_mon = month, .tm_mday = day,
.tm_hour = hour, .tm_min = minute, .tm_sec = second,
.tm_isdst = -1 };
uw_Basis_time r = { timelocal(&tm) };
return r;
}
uw_Basis_int uw_Basis_datetimeYear(uw_context ctx, uw_Basis_time time) {
struct tm tm;
localtime_r(&time.seconds, &tm);
return tm.tm_year + 1900;
}
uw_Basis_int uw_Basis_datetimeMonth(uw_context ctx, uw_Basis_time time) {
struct tm tm;
localtime_r(&time.seconds, &tm);
return tm.tm_mon;
}
uw_Basis_int uw_Basis_datetimeDay(uw_context ctx, uw_Basis_time time) {
struct tm tm;
localtime_r(&time.seconds, &tm);
return tm.tm_mday;
}
uw_Basis_int uw_Basis_datetimeHour(uw_context ctx, uw_Basis_time time) {
struct tm tm;
localtime_r(&time.seconds, &tm);
return tm.tm_hour;
}
uw_Basis_int uw_Basis_datetimeMinute(uw_context ctx, uw_Basis_time time) {
struct tm tm;
localtime_r(&time.seconds, &tm);
return tm.tm_min;
}
uw_Basis_int uw_Basis_datetimeSecond(uw_context ctx, uw_Basis_time time) {
struct tm tm;
localtime_r(&time.seconds, &tm);
return tm.tm_sec;
}
uw_Basis_int uw_Basis_datetimeDayOfWeek(uw_context ctx, uw_Basis_time time) {
struct tm tm;
localtime_r(&time.seconds, &tm);
return tm.tm_wday;
}
void *uw_get_global(uw_context ctx, char *name) {
int i;
for (i = 0; i < ctx->n_globals; ++i)
if (!strcmp(name, ctx->globals[i].name))
return ctx->globals[i].data;
return NULL;
}
size_t uw_globals_max = SIZE_MAX;
void uw_set_global(uw_context ctx, char *name, void *data, void (*free)(void*)) {
int i;
for (i = 0; i < ctx->n_globals; ++i)
if (!strcmp(name, ctx->globals[i].name)) {
if (ctx->globals[i].free)
ctx->globals[i].free(ctx->globals[i].data);
ctx->globals[i].data = data;
ctx->globals[i].free = free;
return;
}
if (ctx->n_globals+1 > uw_globals_max)
uw_error(ctx, FATAL, "Exceeded limit on number of globals");
++ctx->n_globals;
ctx->globals = realloc(ctx->globals, ctx->n_globals * sizeof(global));
ctx->globals[ctx->n_globals-1].name = name;
ctx->globals[ctx->n_globals-1].data = data;
ctx->globals[ctx->n_globals-1].free = free;
}
uw_Basis_bool uw_Basis_isalnum(uw_context ctx, uw_Basis_char c) {
return !!isalnum((int)c);
}
uw_Basis_bool uw_Basis_isalpha(uw_context ctx, uw_Basis_char c) {
return !!isalpha((int)c);
}
uw_Basis_bool uw_Basis_isblank(uw_context ctx, uw_Basis_char c) {
return !!isblank((int)c);
}
uw_Basis_bool uw_Basis_iscntrl(uw_context ctx, uw_Basis_char c) {
return !!iscntrl((int)c);
}
uw_Basis_bool uw_Basis_isdigit(uw_context ctx, uw_Basis_char c) {
return !!isdigit((int)c);
}
uw_Basis_bool uw_Basis_isgraph(uw_context ctx, uw_Basis_char c) {
return !!isgraph((int)c);
}
uw_Basis_bool uw_Basis_islower(uw_context ctx, uw_Basis_char c) {
return !!islower((int)c);
}
uw_Basis_bool uw_Basis_isprint(uw_context ctx, uw_Basis_char c) {
return !!isprint((int)c);
}
uw_Basis_bool uw_Basis_ispunct(uw_context ctx, uw_Basis_char c) {
return !!ispunct((int)c);
}
uw_Basis_bool uw_Basis_isspace(uw_context ctx, uw_Basis_char c) {
return !!isspace((int)c);
}
uw_Basis_bool uw_Basis_isupper(uw_context ctx, uw_Basis_char c) {
return !!isupper((int)c);
}
uw_Basis_bool uw_Basis_isxdigit(uw_context ctx, uw_Basis_char c) {
return !!isxdigit((int)c);
}
uw_Basis_char uw_Basis_tolower(uw_context ctx, uw_Basis_char c) {
return tolower((int)c);
}
uw_Basis_char uw_Basis_toupper(uw_context ctx, uw_Basis_char c) {
return toupper((int)c);
}
uw_Basis_int uw_Basis_ord(uw_context ctx, uw_Basis_char c) {
return (unsigned char)c;
}
uw_Basis_char uw_Basis_chr(uw_context ctx, uw_Basis_int n) {
return n;
}
uw_Basis_string uw_Basis_currentUrl(uw_context ctx) {
return ctx->current_url;
}
void uw_set_currentUrl(uw_context ctx, char *s) {
ctx->current_url = s;
}
void uw_set_deadline(uw_context ctx, int n) {
ctx->deadline = n;
}
void uw_check_deadline(uw_context ctx) {
if (uw_time > ctx->deadline)
uw_error(ctx, FATAL, "Maximum running time exceeded");
}
size_t uw_database_max = SIZE_MAX;
uw_Basis_int uw_Basis_naughtyDebug(uw_context ctx, uw_Basis_string s) {
if (ctx->loggers->log_debug)
ctx->loggers->log_debug(ctx->loggers->logger_data, "%s\n", s);
else
fprintf(stderr, "%s\n", s);
return 0;
}
uw_Basis_unit uw_Basis_debug(uw_context ctx, uw_Basis_string s) {
if (ctx->loggers->log_debug)
ctx->loggers->log_debug(ctx->loggers->logger_data, "%s\n", s);
else
fprintf(stderr, "%s\n", s);
return uw_unit_v;
}
uw_Basis_int uw_Basis_rand(uw_context ctx) {
int r = my_rand();
if (r >= 0)
return r;
else
uw_error(ctx, FATAL, "Random number generation failed");
}
void uw_noPostBody(uw_context ctx) {
ctx->hasPostBody = 0;
}
void uw_postBody(uw_context ctx, uw_Basis_postBody pb) {
ctx->hasPostBody = 1;
ctx->postBody = pb;
}
int uw_hasPostBody(uw_context ctx) {
return ctx->hasPostBody;
}
void uw_isPost(uw_context ctx) {
ctx->isPost = 1;
}
uw_Basis_bool uw_Basis_currentUrlHasPost(uw_context ctx) {
return ctx->isPost;
}
uw_Basis_bool uw_Basis_currentUrlHasQueryString(uw_context ctx) {
return ctx->queryString != NULL && ctx->queryString[0] != 0;
}
void uw_setQueryString(uw_context ctx, uw_Basis_string s) {
ctx->queryString = s;
}
uw_Basis_string uw_queryString(uw_context ctx) {
return ctx->queryString;
}
uw_Basis_postBody uw_getPostBody(uw_context ctx) {
if (ctx->hasPostBody)
return ctx->postBody;
else
uw_error(ctx, FATAL, "Asked for POST body when none exists");
}
failure_kind uw_runCallback(uw_context ctx, void (*callback)(uw_context)) {
int r = setjmp(ctx->jmp_buf);
if (r == 0) {
uw_ensure_transaction(ctx);
callback(ctx);
}
return r;
}
uw_Basis_string uw_Basis_crypt(uw_context ctx, uw_Basis_string key, uw_Basis_string salt) {
char buf[14];
return uw_strdup(ctx, DES_fcrypt(key, salt, buf));
}
uw_Basis_bool uw_Basis_eq_time(uw_context ctx, uw_Basis_time t1, uw_Basis_time t2) {
return !!(t1.seconds == t2.seconds && t1.microseconds == t2.microseconds);
}
uw_Basis_bool uw_Basis_lt_time(uw_context ctx, uw_Basis_time t1, uw_Basis_time t2) {
return !!(t1.seconds < t2.seconds || (t1.seconds == t2.seconds && t1.microseconds < t2.microseconds));
}
uw_Basis_bool uw_Basis_le_time(uw_context ctx, uw_Basis_time t1, uw_Basis_time t2) {
return !!(uw_Basis_eq_time(ctx, t1, t2) || uw_Basis_lt_time(ctx, t1, t2));
}
uw_Basis_time *uw_Basis_readUtc(uw_context ctx, uw_Basis_string s) {
struct tm stm = {};
char *end = strchr(s, 0);
stm.tm_isdst = -1;
if (strptime(s, TIME_FMT_PG, &stm) == end || strptime(s, TIME_FMT, &stm) == end || strptime(s, TIME_FMT_JS, &stm) == end) {
uw_Basis_time *r = uw_malloc(ctx, sizeof(uw_Basis_time));
r->seconds = timegm(&stm);
r->microseconds = 0;
return r;
}
else
return NULL;
}
failure_kind uw_begin_onError(uw_context ctx, char *msg) {
int r = setjmp(ctx->jmp_buf);
if (ctx->app->on_error) {
if (r == 0) {
uw_ensure_transaction(ctx);
uw_buffer_reset(&ctx->outHeaders);
if (on_success[0])
uw_write_header(ctx, "HTTP/1.1 ");
else
uw_write_header(ctx, "Status: ");
uw_write_header(ctx, "500 Internal Server Error\r\n");
uw_write_header(ctx, "Content-type: text/html\r\n");
uw_write(ctx, ctx->app->is_html5 ? uw_begin_html5 : uw_begin_xhtml);
ctx->app->on_error(ctx, msg);
uw_write(ctx, "</html>");
}
return r;
} else
uw_error(ctx, FATAL, "Tried to run nonexistent onError handler");
}
void uw_mayReturnIndirectly(uw_context ctx) {
ctx->allowed_to_return_indirectly = 1;
}
uw_Basis_string uw_Basis_fresh(uw_context ctx) {
int len;
char *r;
uw_check_heap(ctx, 2+INTS_MAX);
r = ctx->heap.front;
sprintf(r, "uw%u%n", ctx->nextId++, &len);
ctx->heap.front += len+1;
return r;
}
uw_Basis_float uw_Basis_floatFromInt(uw_context ctx, uw_Basis_int n) {
return n;
}
uw_Basis_int uw_Basis_ceil(uw_context ctx, uw_Basis_float n) {
return ceil(n);
}
uw_Basis_int uw_Basis_trunc(uw_context ctx, uw_Basis_float n) {
return trunc(n);
}
uw_Basis_int uw_Basis_round(uw_context ctx, uw_Basis_float n) {
return round(n);
}
uw_Basis_int uw_Basis_floor(uw_context ctx, uw_Basis_float n) {
return floor(n);
}
uw_Basis_float uw_Basis_pow(uw_context ctx, uw_Basis_float n, uw_Basis_float m) {
return pow(n,m);
}
uw_Basis_float uw_Basis_sqrt(uw_context ctx, uw_Basis_float n) {
return sqrt(n);
}
uw_Basis_float uw_Basis_sin(uw_context ctx, uw_Basis_float n) {
return sin(n);
}
uw_Basis_float uw_Basis_cos(uw_context ctx, uw_Basis_float n) {
return cos(n);
}
uw_Basis_float uw_Basis_log(uw_context ctx, uw_Basis_float n) {
return log(n);
}
uw_Basis_float uw_Basis_exp(uw_context ctx, uw_Basis_float n) {
return exp(n);
}
uw_Basis_float uw_Basis_asin(uw_context ctx, uw_Basis_float n) {
return asin(n);
}
uw_Basis_float uw_Basis_acos(uw_context ctx, uw_Basis_float n) {
return acos(n);
}
uw_Basis_float uw_Basis_atan(uw_context ctx, uw_Basis_float n) {
return atan(n);
}
uw_Basis_float uw_Basis_atan2(uw_context ctx, uw_Basis_float n, uw_Basis_float m) {
return atan2(n, m);
}
uw_Basis_float uw_Basis_abs(uw_context ctx, uw_Basis_float n) {
return fabs(n);
}
uw_Basis_string uw_Basis_atom(uw_context ctx, uw_Basis_string s) {
char *p;
for (p = s; *p; ++p) {
char c = *p;
if (!isalnum((int)c) && c != '+' && c != '-' && c != '.' && c != '%' && c != '#')
uw_error(ctx, FATAL, "Disallowed character in CSS atom");
}
return s;
}
uw_Basis_string uw_Basis_css_url(uw_context ctx, uw_Basis_string s) {
char *p;
for (p = s; *p; ++p) {
char c = *p;
if (!isalnum((int)c) && c != ':' && c != '/' && c != '.' && c != '_' && c != '+'
&& c != '-' && c != '%' && c != '?' && c != '&' && c != '=' && c != '#')
uw_error(ctx, FATAL, "Disallowed character in CSS URL");
}
return s;
}
uw_Basis_string uw_Basis_property(uw_context ctx, uw_Basis_string s) {
char *p;
if (!*s)
uw_error(ctx, FATAL, "Empty CSS property");
if (!islower((int)s[0]) && s[0] != '_')
uw_error(ctx, FATAL, "Bad initial character in CSS property");
for (p = s; *p; ++p) {
char c = *p;
if (!islower((int)c) && !isdigit((int)c) && c != '_' && c != '-')
uw_error(ctx, FATAL, "Disallowed character in CSS property");
}
return s;
}
uw_Basis_string uw_Basis_fieldName(uw_context ctx, uw_Basis_postField f) {
return f.name;
}
uw_Basis_string uw_Basis_fieldValue(uw_context ctx, uw_Basis_postField f) {
return f.value;
}
uw_Basis_string uw_Basis_remainingFields(uw_context ctx, uw_Basis_postField f) {
return f.remaining;
}
uw_Basis_postField *uw_Basis_firstFormField(uw_context ctx, uw_Basis_string s) {
char *unurl;
uw_Basis_postField *f;
if (!ctx->hasPostBody)
uw_error(ctx, FATAL, "firstFormField called when there is no POST body");
if (s < ctx->postBody.data || s >= ctx->postBody.data + ctx->postBody.len)
return NULL;
f = uw_malloc(ctx, sizeof(uw_Basis_postField));
unurl = s;
f->name = uw_Basis_unurlifyString(ctx, &unurl);
s = strchr(s, 0);
if (!s)
uw_error(ctx, FATAL, "firstFormField: Missing null terminator");
++s;
unurl = s;
f->value = uw_Basis_unurlifyString(ctx, &unurl);
s = strchr(s, 0);
if (!s)
uw_error(ctx, FATAL, "firstFormField: Missing null terminator");
f->remaining = s+1;
return f;
}
uw_Basis_string uw_Basis_blessData(uw_context ctx, uw_Basis_string s) {
char *p = s;
for (; *p; ++p)
if (!isalnum(*p) && *p != '-' && *p != '_')
uw_error(ctx, FATAL, "Illegal HTML5 data-* attribute: %s", s);
return s;
}
int uw_remoteSock(uw_context ctx) {
return ctx->remoteSock;
}
void uw_set_remoteSock(uw_context ctx, int sock) {
ctx->remoteSock = sock;
}
// Sqlcache
static void uw_Sqlcache_freeValue(uw_Sqlcache_Value *value) {
if (value) {
free(value->result);
free(value->output);
free(value->scriptOutput);
free(value);
}
}
static void uw_Sqlcache_freeEntry(uw_Sqlcache_Entry* entry) {
if (entry) {
free(entry->key);
uw_Sqlcache_freeValue(entry->value);
free(entry);
}
}
// TODO: pick a number.
static unsigned int uw_Sqlcache_maxSize = 1234567890;
static void uw_Sqlcache_delete(uw_Sqlcache_Cache *cache, uw_Sqlcache_Entry *entry) {
if (entry) {
HASH_DEL(cache->table, entry);
uw_Sqlcache_freeEntry(entry);
}
}
static uw_Sqlcache_Entry *uw_Sqlcache_find(uw_Sqlcache_Cache *cache, char *key, size_t len, int bump) {
uw_Sqlcache_Entry *entry = NULL;
HASH_FIND(hh, cache->table, key, len, entry);
if (entry && bump) {
// Bump for LRU purposes.
HASH_DEL(cache->table, entry);
// Important that we use [entry->key], because [key] might be ephemeral.
HASH_ADD_KEYPTR(hh, cache->table, entry->key, len, entry);
}
return entry;
}
static void uw_Sqlcache_add(uw_Sqlcache_Cache *cache, uw_Sqlcache_Entry *entry, size_t len) {
HASH_ADD_KEYPTR(hh, cache->table, entry->key, len, entry);
if (HASH_COUNT(cache->table) > uw_Sqlcache_maxSize) {
// Deletes the first element of the cache.
uw_Sqlcache_delete(cache, cache->table);
}
}
static unsigned long uw_Sqlcache_getTimeNow(uw_Sqlcache_Cache *cache) {
// TODO: verify that this makes time comparisons do the Right Thing.
return cache->timeNow++;
}
static unsigned long uw_Sqlcache_timeMax(unsigned long x, unsigned long y) {
return x > y ? x : y;
}
static char uw_Sqlcache_keySep = '_';
static char *uw_Sqlcache_allocKeyBuffer(char **keys, size_t numKeys) {
size_t len = 0;
while (numKeys-- > 0) {
char* k = keys[numKeys];
if (!k) {
// Can only happen when flushing, in which case we don't need anything past the null key.
break;
}
// Leave room for separator.
len += 1 + strlen(k);
}
char *buf = malloc(len+1);
// If nothing is copied into the buffer, it should look like it has length 0.
buf[0] = 0;
return buf;
}
static char *uw_Sqlcache_keyCopy(char *buf, char *key) {
*buf++ = uw_Sqlcache_keySep;
return stpcpy(buf, key);
}
// The NUL-terminated prefix of [key] below always looks something like "_k1_k2_k3..._kn".
uw_Sqlcache_Value *uw_Sqlcache_check(uw_context ctx, uw_Sqlcache_Cache *cache, char **keys) {
int doBump = random() % 1024 == 0;
if (doBump) {
pthread_rwlock_wrlock(&cache->lockIn);
} else {
pthread_rwlock_rdlock(&cache->lockIn);
}
size_t numKeys = cache->numKeys;
char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
char *buf = key;
time_t timeInvalid = cache->timeInvalid;
uw_Sqlcache_Entry *entry = NULL;
if (numKeys == 0) {
entry = cache->table;
if (!entry) {
free(key);
pthread_rwlock_unlock(&cache->lockIn);
return NULL;
}
} else {
while (numKeys-- > 0) {
buf = uw_Sqlcache_keyCopy(buf, keys[numKeys]);
size_t len = buf - key;
entry = uw_Sqlcache_find(cache, key, len, doBump);
if (!entry) {
free(key);
pthread_rwlock_unlock(&cache->lockIn);
return NULL;
}
timeInvalid = uw_Sqlcache_timeMax(timeInvalid, entry->timeInvalid);
}
free(key);
}
uw_Sqlcache_Value *value = entry->value;
pthread_rwlock_unlock(&cache->lockIn);
// ASK: though the argument isn't trivial, this is safe, right?
// Returning outside the lock is safe because updates happen at commit time.
// Those are the only times the returned value or its strings can get freed.
// Handler output is a new string, so it's safe to free this at commit time.
return value && timeInvalid < value->timeValid ? value : NULL;
}
static void uw_Sqlcache_storeCommitOne(uw_Sqlcache_Cache *cache, char **keys, uw_Sqlcache_Value *value) {
pthread_rwlock_wrlock(&cache->lockIn);
size_t numKeys = cache->numKeys;
time_t timeNow = uw_Sqlcache_getTimeNow(cache);
uw_Sqlcache_Entry *entry = NULL;
if (numKeys == 0) {
entry = cache->table;
if (!entry) {
entry = calloc(1, sizeof(uw_Sqlcache_Entry));
entry->key = NULL;
entry->value = NULL;
entry->timeInvalid = 0;
cache->table = entry;
}
} else {
char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
char *buf = key;
while (numKeys-- > 0) {
buf = uw_Sqlcache_keyCopy(buf, keys[numKeys]);
size_t len = buf - key;
entry = uw_Sqlcache_find(cache, key, len, 1);
if (!entry) {
entry = calloc(1, sizeof(uw_Sqlcache_Entry));
entry->key = strdup(key);
entry->value = NULL;
entry->timeInvalid = 0;
uw_Sqlcache_add(cache, entry, len);
}
}
free(key);
}
if (!entry->value || entry->value->timeValid < value->timeValid) {
uw_Sqlcache_freeValue(entry->value);
entry->value = value;
entry->value->timeValid = timeNow;
}
pthread_rwlock_unlock(&cache->lockIn);
}
static void uw_Sqlcache_flushCommitOne(uw_Sqlcache_Cache *cache, char **keys) {
}
static void uw_Sqlcache_commit(void *data) {
uw_context ctx = (uw_context)data;
uw_Sqlcache_Update *update = ctx->cacheUpdate;
while (update) {
uw_Sqlcache_Cache *cache = update->cache;
char **keys = update->keys;
if (update->value) {
uw_Sqlcache_storeCommitOne(cache, keys, update->value);
} else {
uw_Sqlcache_flushCommitOne(cache, keys);
}
update = update->next;
}
}
static void uw_Sqlcache_free(void *data, int dontCare) {
uw_context ctx = (uw_context)data;
uw_Sqlcache_Update *update = ctx->cacheUpdate;
while (update) {
char** keys = update->keys;
size_t numKeys = update->cache->numKeys;
while (numKeys-- > 0) {
free(keys[numKeys]);
}
free(keys);
// Don't free [update->value]: it's in the cache now!
uw_Sqlcache_Update *nextUpdate = update->next;
free(update);
update = nextUpdate;
}
ctx->cacheUpdate = NULL;
ctx->cacheUpdateTail = NULL;
uw_Sqlcache_Unlock *unlock = ctx->cacheUnlock;
while (unlock) {
pthread_rwlock_unlock(unlock->lock);
uw_Sqlcache_Unlock *nextUnlock = unlock->next;
free(unlock);
unlock = nextUnlock;
}
ctx->cacheUnlock = NULL;
}
static void uw_Sqlcache_pushUnlock(uw_context ctx, pthread_rwlock_t *lock) {
if (!ctx->cacheUnlock) {
// Just need one registered commit for both updating and unlocking.
uw_register_transactional(ctx, ctx, uw_Sqlcache_commit, NULL, uw_Sqlcache_free);
}
uw_Sqlcache_Unlock *unlock = malloc(sizeof(uw_Sqlcache_Unlock));
unlock->lock = lock;
unlock->next = ctx->cacheUnlock;
ctx->cacheUnlock = unlock;
}
void uw_Sqlcache_rlock(uw_context ctx, uw_Sqlcache_Cache *cache) {
pthread_rwlock_rdlock(&cache->lockOut);
uw_Sqlcache_pushUnlock(ctx, &cache->lockOut);
}
void uw_Sqlcache_wlock(uw_context ctx, uw_Sqlcache_Cache *cache) {
pthread_rwlock_wrlock(&cache->lockOut);
uw_Sqlcache_pushUnlock(ctx, &cache->lockOut);
}
static char **uw_Sqlcache_copyKeys(char **keys, size_t numKeys) {
char **copy = malloc(sizeof(char *) * numKeys);
while (numKeys-- > 0) {
char *k = keys[numKeys];
copy[numKeys] = k ? strdup(k) : NULL;
}
return copy;
}
void uw_Sqlcache_store(uw_context ctx, uw_Sqlcache_Cache *cache, char **keys, uw_Sqlcache_Value *value) {
uw_Sqlcache_Update *update = malloc(sizeof(uw_Sqlcache_Update));
update->cache = cache;
update->keys = uw_Sqlcache_copyKeys(keys, cache->numKeys);
update->value = value;
update->next = NULL;
// Can't use [uw_Sqlcache_getTimeNow] because it modifies state and we don't have the lock.
pthread_rwlock_rdlock(&cache->lockIn);
value->timeValid = cache->timeNow;
pthread_rwlock_unlock(&cache->lockIn);
if (ctx->cacheUpdateTail) {
ctx->cacheUpdateTail->next = update;
} else {
ctx->cacheUpdate = update;
}
ctx->cacheUpdateTail = update;
}
void uw_Sqlcache_flush(uw_context ctx, uw_Sqlcache_Cache *cache, char **keys) {
// A flush has to happen immediately so that subsequent stores in the same transaction fail.
// This is safe to do because we will always call [uw_Sqlcache_wlock] earlier.
// If the transaction fails, the only harm done is a few extra cache misses.
pthread_rwlock_wrlock(&cache->lockIn);
size_t numKeys = cache->numKeys;
if (numKeys == 0) {
uw_Sqlcache_Entry *entry = cache->table;
if (entry) {
uw_Sqlcache_freeValue(entry->value);
entry->value = NULL;
}
} else {
char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
char *buf = key;
time_t timeNow = uw_Sqlcache_getTimeNow(cache);
while (numKeys-- > 0) {
char *k = keys[numKeys];
if (!k) {
size_t len = buf - key;
if (len == 0) {
// The first key was null.
cache->timeInvalid = timeNow;
} else {
uw_Sqlcache_Entry *entry = uw_Sqlcache_find(cache, key, len, 0);
if (entry) {
entry->timeInvalid = timeNow;
}
}
free(key);
pthread_rwlock_unlock(&cache->lockIn);
return;
}
buf = uw_Sqlcache_keyCopy(buf, k);
}
// All the keys were non-null, so we delete the pointed-to entry.
size_t len = buf - key;
uw_Sqlcache_Entry *entry = uw_Sqlcache_find(cache, key, len, 0);
free(key);
uw_Sqlcache_delete(cache, entry);
}
pthread_rwlock_unlock(&cache->lockIn);
}
int strcmp_nullsafe(const char *str1, const char *str2) {
if (str1)
return strcmp(str1, str2);
else
return 1;
}
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