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#include <fcntl.h>
#include "anna.h"
int get_lowmem_level (void) {
int l;
l=open(LOWMEM_STATUS_FILE, O_RDONLY);
if (l != -1) {
char buf[2];
read(l, buf, 1);
close(l);
return atoi(buf);
}
return 0;
}
int is_queued(di_package *package) {
FILE *fp;
char buf[1024];
if ((fp = fopen("/var/lib/anna-install/queue", "r")) != NULL) {
while (fgets(buf, sizeof(buf), fp)) {
buf[strlen(buf) - 1] = '\0';
if (strcmp(buf, package->package) == 0) {
fclose(fp);
return 1;
}
}
fclose(fp);
}
return 0;
}
/* This function checks if p is in the given list of installed packages
* and compares versions. */
bool is_installed(di_package *p, di_packages *status) {
di_package *q;
di_package_version *pv, *qv;
bool ret;
/* If we don't understand the version number, we play safe
* and assume we should install it */
if (p->version == NULL || !(pv = di_package_version_parse(p)))
return false;
q = di_packages_get_package(status, p->package, 0);
if (q == NULL || q->version == NULL || !(qv = di_package_version_parse(q)))
return false;
ret = (di_package_version_compare(pv, qv) <= 0);
di_package_version_free(pv);
di_package_version_free(qv);
return ret;
}
static size_t choice_strcpy(char *dest, char *src, size_t size) {
size_t n=0;
while (*src && (n < size-2)) {
if (*src == ',')
dest[n++] = '\\';
dest[n++] = *src++;
}
dest[n] = '\0';
return n;
}
size_t package_to_choice(di_package *package, char *buf, size_t size) {
int n;
n = choice_strcpy(buf, package->package, size);
n += choice_strcpy(buf+n, ": ", size-n);
n += choice_strcpy(buf+n, package->short_description, size-n);
return n;
}
char *list_to_choices(di_package **packages) {
char buf[200], *ret;
int count = 0;
size_t ret_size = 1024, ret_used = 1, size;
di_package *p;
ret = di_malloc(1024);
ret[0] = '\0';
while ((p = packages[count])) {
size = package_to_choice(p, buf, 200);
if (ret_used + size + 2 > ret_size) {
ret_size += 1024;
ret = di_realloc(ret, ret_size);
}
strcat(ret, buf);
ret_used += size + 2;
count++;
if (packages[count])
strcat(ret, ", ");
}
return ret;
}
int unpack_package (const char *pkgfile) {
char *command;
int ret;
if (asprintf(&command, "%s %s", DPKG_UNPACK_COMMAND, pkgfile) == -1)
return 0;
ret = !di_exec_shell_log(command);
free(command);
return ret;
}
int configure_package (const char *package) {
char *command;
int ret;
if (asprintf(&command, "%s %s", DPKG_CONFIGURE_COMMAND, package) == -1)
return 0;
ret = !di_exec_shell_log(command);
free(command);
return ret;
}
/* Check whether the md5sum of file matches sum. If not, return 0. */
int md5sum(const char *sum, const char *file) {
FILE *fp;
char line[1024];
/* Trivially true if the Packages file doesn't have md5sum lines */
if (sum == NULL)
return 1;
snprintf(line, sizeof(line), "/usr/bin/md5sum %s", file);
fp = popen(line, "r");
if (fp == NULL)
return 0;
if (fgets(line, sizeof(line), fp) != NULL) {
fclose(fp);
if (strlen(line) < 32)
return 0;
line[32] = '\0';
return !strcmp(line, sum);
}
fclose(fp);
return 0;
}
/* Used to qsort a package array by name. */
int package_name_compare(const void *v1, const void *v2) {
di_package *p1, *p2;
p1 = *(di_package **)v1;
p2 = *(di_package **)v2;
return strcmp(p1->package, p2->package);
}
/* The INCLUDE_FILE lists packages that should be installed by default. */
void take_includes(di_packages *packages) {
di_package *p;
FILE *fp;
char buf[1024], *ptr;
di_slist_node *node;
if ((fp = fopen(INCLUDE_FILE, "r")) == NULL)
return;
while (fgets(buf, sizeof(buf), fp) != NULL) {
if (buf[0] == '#')
continue;
if ((ptr = strchr(buf, '\n')) != NULL)
*ptr = '\0';
for (node = packages->list.head; node; node = node->next) {
p = node->data;
if (strcmp(p->package, buf) == 0)
p->status_want = di_package_status_want_install;
}
}
fclose(fp);
}
/* While the EXCLUDE file lists packages that should not be installed by
* default. */
void drop_excludes(di_packages *packages) {
di_package *p;
FILE *fp;
char buf[1024], *ptr;
di_slist_node *node;
if ((fp = fopen(EXCLUDE_FILE, "r")) == NULL)
return;
while (fgets(buf, sizeof(buf), fp) != NULL) {
if (buf[0] == '#')
continue;
if ((ptr = strchr(buf, '\n')) != NULL)
*ptr = '\0';
for (node = packages->list.head; node; node = node->next) {
p = node->data;
if (strcmp(p->package, buf) == 0)
p->status_want = di_package_status_want_deinstall;
}
}
fclose(fp);
}
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