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#include "support.h"
#include "../support/gutils.h"
list_t *open_files;
int retriever_init_common(struct file_system_info *fsinfo){
int i = 0, j = 0;
debug(2, "Received %d repos;\n", fsinfo->repo_count);
file_mutex = calloc(fsinfo->repo_count, sizeof(pthread_mutex_t *));
for (i = 0; i < fsinfo->repo_count; i++){
file_mutex[i] = calloc(fsinfo->rev_count[i], sizeof(pthread_mutex_t));
for (j = 0; j < fsinfo->rev_count[i]; j++)
pthread_mutex_init(&file_mutex[i][j], 0);
};
return (open_files = single(list_t)) != NULL;
};
int retrieve_common(struct file_system_info *fsinfo, struct stats *stats, int repo){
#define retrieve_common_finish(value){ \
unlock(file_mutex[repo][stats->rev]); \
gstrdel(file); \
gstrdel(revision); \
free(temp); \
return value; \
}
char *file = NULL;
char *revision = calloc(20, sizeof(char));
struct stat *temp = single(struct stat);
debug(2, "Received file %s from repo %d;\n", stats->path, repo);
lock(file_mutex[repo][stats->rev]);
node_t *node = add_file(open_files, stats->path, stats->rev);
if (node->count > 0){
node->count++;
retrieve_common_finish(0);
};
if (create_tmp_file(stats, node) == -1)
retrieve_common_finish(-1);
if (gmstrcpy(&file, fsinfo->repos[repo], "/", stats->internal, 0) == -1)
retrieve_common_finish(-1);
sprintf(revision, "%dB", stats->rev);
if (retrieve_rdiff(revision, file, node->tmp_path) != 0)
retrieve_common_finish(-1);
if (stat(node->tmp_path, temp) != 0)
retrieve_common_finish(-1);
node->count = 1;
retrieve_common_finish(0);
};
int repo_number(struct file_system_info *fsinfo, char *path){
#define repo_number_finish(value) { \
gstrdel(repo); \
return value; \
}
int i = 0;
char *repo = NULL;
debug(3, "Received file %s;\n", path);
if (fsinfo->repo_count == 1)
repo_number_finish(0);
if ((repo = gpthprt(path, 0)) == NULL)
repo_number_finish(-1);
for (i = 0; (i < fsinfo->repo_count) && (strcmp(repo, fsinfo->repo_names[i]) != 0); i++);
if (i == fsinfo->repo_count)
repo_number_finish(-1);
repo_number_finish(i);
};
int retrieve_rdiff(char *revision, char *file, char *tmp_path){
int pid = 0;
debug(2, "Received file %s from revision %s retrieved to path %s\n", file, revision, tmp_path);
if ((pid = fork()) == -1)
return -1;
if (pid == 0){
debug(2, "%s %s %s\n", revision, file, tmp_path);
if (execlp("rdiff-backup", "rdiff-backup", "--force", "-r", revision, file, tmp_path, NULL) == -1)
fail(ERR_RDIFF);
};
waitpid(pid, 0, 0);
return 0;
};
int create_tmp_file(stats_t *stats, node_t *node){
#define create_tmp_file_error { \
gstrdel(tmp_template); \
if (desc != -1) \
close(desc); \
return -1; \
}
char *tmp_template = NULL;
int desc = -1;
debug(3, "Received file %s;\n", stats->path);
if (gmstrcpy(&tmp_template, data_dir, "/", stats->name, "XXXXXX", 0) != 0)
create_tmp_file_error;
desc = mkstemp(tmp_template);
if (desc == -1)
create_tmp_file_error;
close(desc);
if (gstrcpy(&node->tmp_path, tmp_template) != 0)
create_tmp_file_error;
gstrdel(tmp_template);
return 0;
};
node_t * add_file(list_t *list, char *path, int rev){
if (list->head == NULL){
list->head = list->tail = single(node_t);
gstrcpy(&list->head->path, path);
return list->head;
}
node_t *node = get_open_file(path);
if (node)
return node;
node = single(node_t);
list->tail->next = node;
node->prev = list->tail;
list->tail = node;
gstrcpy(&node->path, path);
node->rev = rev;
return node;
};
node_t * get_open_file(char *path){
node_t *node = open_files->head;
for (; node && strcmp(node->path, path) != 0; node = node->next);
return node;
};
void delete_open_file(node_t *node){
if (node->next)
node->next->prev = node->prev;
else
open_files->tail = node->prev;
if (node->prev)
node->prev->next = node->next;
else
open_files->head = node->next;
free(node->path);
free(node->tmp_path);
free(node);
};
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