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/*
* blogc: A blog compiler.
* Copyright (C) 2015-2016 Rafael G. Martins <rafael@rafaelmartins.eng.br>
*
* This program can be distributed under the terms of the BSD License.
* See the file LICENSE.
*/
#include <errno.h>
#include <stdio.h>
#include <libgen.h>
#include <limits.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include "../common/config-parser.h"
#include "../common/error.h"
#include "../common/file.h"
char*
bgr_post_receive_get_config_section(bc_config_t *config, const char *repo_path,
const char *home)
{
char *rv = NULL;
char** sections = bc_config_list_sections(config);
for (size_t i = 0; sections[i] != NULL; i++) {
if (bc_str_starts_with(sections[i], "repo:")) {
char *tmp_repo = bc_strdup_printf("%s/repos/%s", home, sections[i] + 5);
char *real_tmp_repo = realpath(tmp_repo, NULL); // maybe not needed
free(tmp_repo);
if (real_tmp_repo == NULL)
continue;
if (0 == strcmp(real_tmp_repo, repo_path)) {
rv = bc_strdup(sections[i]);
free(real_tmp_repo);
break;
}
free(real_tmp_repo);
}
}
bc_strv_free(sections);
return rv;
}
int
bgr_post_receive_hook(int argc, char *argv[])
{
int rv = 0;
char *mirror = NULL;
char *hooks_dir = dirname(argv[0]); // this was validated by main()
char *real_hooks_dir = realpath(hooks_dir, NULL);
if (real_hooks_dir == NULL) {
fprintf(stderr, "error: failed to guess repository root.\n");
return 1;
}
char *repo_path = bc_strdup(dirname(real_hooks_dir));
free(real_hooks_dir);
if (0 != chdir(repo_path)) {
fprintf(stderr, "error: failed to change to repository root\n");
rv = 1;
goto cleanup;
}
// local repository settings should take precedence, so if the repo have
// the 'mirror' remote, just push to it.
// this will be removed at some point, but will be kept for compatibility
// with old setups.
if ((0 == system("git config --local remote.mirror.pushurl > /dev/null")) ||
(0 == system("git config --local remote.mirror.url > /dev/null")))
{
mirror = bc_strdup("mirror");
goto push;
}
char *home = getenv("HOME");
if (home == NULL) {
fprintf(stderr, "warning: failed to find user home path, "
"mirroring disabled\n");
goto cleanup;
}
char *config_file = bc_strdup_printf("%s/blogc-git-receiver.ini", home);
if ((0 != access(config_file, F_OK))) {
fprintf(stderr, "warning: repository mirroring disabled\n");
free(config_file);
goto cleanup;
}
size_t len;
bc_error_t *err = NULL;
char* config_content = bc_file_get_contents(config_file, true, &len, &err);
if (err != NULL) {
fprintf(stderr, "warning: failed to read configuration file (%s), "
"mirroring disabled: %s\n", config_file, err->msg);
bc_error_free(err);
free(config_file);
free(config_content);
goto cleanup;
}
bc_config_t *config = bc_config_parse(config_content, len, &err);
free(config_content);
if (err != NULL) {
fprintf(stderr, "warning: failed to parse configuration file (%s), "
"mirroring disabled: %s\n", config_file, err->msg);
bc_error_free(err);
free(config_file);
goto cleanup;
}
free(config_file);
char *config_section = bgr_post_receive_get_config_section(config, repo_path,
home);
if (config_section == NULL) {
fprintf(stderr, "warning: repository mirroring disabled\n");
bc_config_free(config);
goto cleanup;
}
mirror = bc_strdup(bc_config_get(config, config_section, "mirror"));
free(config_section);
bc_config_free(config);
if (mirror == NULL) {
fprintf(stderr, "warning: repository mirroring disabled\n");
goto cleanup;
}
push:
{
char *git_cmd = bc_strdup_printf("git push --mirror %s", mirror);
if (0 != system(git_cmd))
fprintf(stderr, "warning: failed push to git mirror\n");
free(git_cmd);
}
free(mirror);
cleanup:
free(repo_path);
return 0;
}
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