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473 lines
12 KiB
C
473 lines
12 KiB
C
/* shared.c: global vars + some callback functions
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*
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* Copyright (C) 2006 Lars Hjemli
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*
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* Licensed under GNU General Public License v2
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* (see COPYING for full license text)
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*/
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#include "cgit.h"
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struct repolist cgit_repolist;
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struct repoinfo *cgit_repo;
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int cgit_cmd;
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const char *cgit_version = CGIT_VERSION;
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char *cgit_root_title = "Git repository browser";
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char *cgit_css = "/cgit.css";
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char *cgit_logo = "/git-logo.png";
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char *cgit_index_header = NULL;
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char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
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char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
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char *cgit_agefile = "info/web/last-modified";
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char *cgit_virtual_root = NULL;
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char *cgit_script_name = CGIT_SCRIPT_NAME;
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char *cgit_cache_root = CGIT_CACHE_ROOT;
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char *cgit_repo_group = NULL;
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int cgit_nocache = 0;
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int cgit_snapshots = 0;
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int cgit_enable_index_links = 0;
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int cgit_enable_log_filecount = 0;
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int cgit_enable_log_linecount = 0;
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int cgit_max_lock_attempts = 5;
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int cgit_cache_root_ttl = 5;
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int cgit_cache_repo_ttl = 5;
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int cgit_cache_dynamic_ttl = 5;
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int cgit_cache_static_ttl = -1;
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int cgit_cache_max_create_time = 5;
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int cgit_summary_log = 0;
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int cgit_summary_tags = 0;
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int cgit_summary_branches = 0;
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int cgit_renamelimit = -1;
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int cgit_max_msg_len = 60;
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int cgit_max_repodesc_len = 60;
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int cgit_max_commit_count = 50;
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int cgit_query_has_symref = 0;
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int cgit_query_has_sha1 = 0;
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char *cgit_querystring = NULL;
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char *cgit_query_repo = NULL;
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char *cgit_query_page = NULL;
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char *cgit_query_head = NULL;
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char *cgit_query_search = NULL;
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char *cgit_query_sha1 = NULL;
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char *cgit_query_sha2 = NULL;
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char *cgit_query_path = NULL;
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char *cgit_query_name = NULL;
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int cgit_query_ofs = 0;
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int htmlfd = 0;
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int cgit_get_cmd_index(const char *cmd)
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{
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static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
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"snapshot", "tag", "refs", NULL};
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int i;
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for(i = 0; cmds[i]; i++)
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if (!strcmp(cmd, cmds[i]))
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return i + 1;
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return 0;
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}
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int chk_zero(int result, char *msg)
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{
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if (result != 0)
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die("%s: %s", msg, strerror(errno));
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return result;
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}
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int chk_positive(int result, char *msg)
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{
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if (result <= 0)
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die("%s: %s", msg, strerror(errno));
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return result;
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}
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int chk_non_negative(int result, char *msg)
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{
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if (result < 0)
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die("%s: %s",msg, strerror(errno));
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return result;
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}
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struct repoinfo *add_repo(const char *url)
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{
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struct repoinfo *ret;
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if (++cgit_repolist.count > cgit_repolist.length) {
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if (cgit_repolist.length == 0)
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cgit_repolist.length = 8;
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else
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cgit_repolist.length *= 2;
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cgit_repolist.repos = xrealloc(cgit_repolist.repos,
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cgit_repolist.length *
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sizeof(struct repoinfo));
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}
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ret = &cgit_repolist.repos[cgit_repolist.count-1];
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ret->url = trim_end(url, '/');
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ret->name = ret->url;
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ret->path = NULL;
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ret->desc = NULL;
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ret->owner = NULL;
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ret->group = cgit_repo_group;
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ret->defbranch = "master";
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ret->snapshots = cgit_snapshots;
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ret->enable_log_filecount = cgit_enable_log_filecount;
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ret->enable_log_linecount = cgit_enable_log_linecount;
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ret->module_link = cgit_module_link;
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ret->readme = NULL;
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return ret;
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}
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struct repoinfo *cgit_get_repoinfo(const char *url)
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{
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int i;
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struct repoinfo *repo;
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for (i=0; i<cgit_repolist.count; i++) {
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repo = &cgit_repolist.repos[i];
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if (!strcmp(repo->url, url))
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return repo;
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}
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return NULL;
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}
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void cgit_global_config_cb(const char *name, const char *value)
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{
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if (!strcmp(name, "root-title"))
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cgit_root_title = xstrdup(value);
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else if (!strcmp(name, "css"))
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cgit_css = xstrdup(value);
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else if (!strcmp(name, "logo"))
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cgit_logo = xstrdup(value);
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else if (!strcmp(name, "index-header"))
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cgit_index_header = xstrdup(value);
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else if (!strcmp(name, "logo-link"))
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cgit_logo_link = xstrdup(value);
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else if (!strcmp(name, "module-link"))
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cgit_module_link = xstrdup(value);
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else if (!strcmp(name, "virtual-root"))
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cgit_virtual_root = trim_end(value, '/');
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else if (!strcmp(name, "nocache"))
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cgit_nocache = atoi(value);
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else if (!strcmp(name, "snapshots"))
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cgit_snapshots = cgit_parse_snapshots_mask(value);
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else if (!strcmp(name, "enable-index-links"))
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cgit_enable_index_links = atoi(value);
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else if (!strcmp(name, "enable-log-filecount"))
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cgit_enable_log_filecount = atoi(value);
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else if (!strcmp(name, "enable-log-linecount"))
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cgit_enable_log_linecount = atoi(value);
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else if (!strcmp(name, "cache-root"))
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cgit_cache_root = xstrdup(value);
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else if (!strcmp(name, "cache-root-ttl"))
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cgit_cache_root_ttl = atoi(value);
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else if (!strcmp(name, "cache-repo-ttl"))
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cgit_cache_repo_ttl = atoi(value);
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else if (!strcmp(name, "cache-static-ttl"))
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cgit_cache_static_ttl = atoi(value);
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else if (!strcmp(name, "cache-dynamic-ttl"))
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cgit_cache_dynamic_ttl = atoi(value);
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else if (!strcmp(name, "max-message-length"))
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cgit_max_msg_len = atoi(value);
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else if (!strcmp(name, "max-repodesc-length"))
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cgit_max_repodesc_len = atoi(value);
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else if (!strcmp(name, "max-commit-count"))
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cgit_max_commit_count = atoi(value);
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else if (!strcmp(name, "summary-log"))
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cgit_summary_log = atoi(value);
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else if (!strcmp(name, "summary-branches"))
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cgit_summary_branches = atoi(value);
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else if (!strcmp(name, "summary-tags"))
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cgit_summary_tags = atoi(value);
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else if (!strcmp(name, "agefile"))
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cgit_agefile = xstrdup(value);
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else if (!strcmp(name, "renamelimit"))
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cgit_renamelimit = atoi(value);
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else if (!strcmp(name, "repo.group"))
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cgit_repo_group = xstrdup(value);
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else if (!strcmp(name, "repo.url"))
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cgit_repo = add_repo(value);
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else if (!strcmp(name, "repo.name"))
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cgit_repo->name = xstrdup(value);
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else if (cgit_repo && !strcmp(name, "repo.path"))
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cgit_repo->path = trim_end(value, '/');
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else if (cgit_repo && !strcmp(name, "repo.desc"))
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cgit_repo->desc = xstrdup(value);
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else if (cgit_repo && !strcmp(name, "repo.owner"))
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cgit_repo->owner = xstrdup(value);
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else if (cgit_repo && !strcmp(name, "repo.defbranch"))
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cgit_repo->defbranch = xstrdup(value);
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else if (cgit_repo && !strcmp(name, "repo.snapshots"))
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cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
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else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
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cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
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else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
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cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
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else if (cgit_repo && !strcmp(name, "repo.module-link"))
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cgit_repo->module_link= xstrdup(value);
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else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
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if (*value == '/')
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cgit_repo->readme = xstrdup(value);
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else
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cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
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} else if (!strcmp(name, "include"))
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cgit_read_config(value, cgit_global_config_cb);
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}
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void cgit_querystring_cb(const char *name, const char *value)
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{
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if (!strcmp(name,"r")) {
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cgit_query_repo = xstrdup(value);
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cgit_repo = cgit_get_repoinfo(value);
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} else if (!strcmp(name, "p")) {
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cgit_query_page = xstrdup(value);
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cgit_cmd = cgit_get_cmd_index(value);
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} else if (!strcmp(name, "url")) {
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cgit_parse_url(value);
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} else if (!strcmp(name, "q")) {
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cgit_query_search = xstrdup(value);
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} else if (!strcmp(name, "h")) {
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cgit_query_head = xstrdup(value);
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cgit_query_has_symref = 1;
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} else if (!strcmp(name, "id")) {
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cgit_query_sha1 = xstrdup(value);
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cgit_query_has_sha1 = 1;
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} else if (!strcmp(name, "id2")) {
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cgit_query_sha2 = xstrdup(value);
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cgit_query_has_sha1 = 1;
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} else if (!strcmp(name, "ofs")) {
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cgit_query_ofs = atoi(value);
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} else if (!strcmp(name, "path")) {
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cgit_query_path = trim_end(value, '/');
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} else if (!strcmp(name, "name")) {
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cgit_query_name = xstrdup(value);
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}
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}
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void *cgit_free_commitinfo(struct commitinfo *info)
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{
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free(info->author);
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free(info->author_email);
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free(info->committer);
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free(info->committer_email);
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free(info->subject);
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free(info);
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return NULL;
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}
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int hextoint(char c)
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{
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if (c >= 'a' && c <= 'f')
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return 10 + c - 'a';
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else if (c >= 'A' && c <= 'F')
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return 10 + c - 'A';
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else if (c >= '0' && c <= '9')
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return c - '0';
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else
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return -1;
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}
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char *trim_end(const char *str, char c)
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{
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int len;
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char *s, *t;
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if (str == NULL)
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return NULL;
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t = (char *)str;
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len = strlen(t);
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while(len > 0 && t[len - 1] == c)
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len--;
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if (len == 0)
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return NULL;
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c = t[len];
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t[len] = '\0';
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s = xstrdup(t);
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t[len] = c;
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return s;
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}
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void cgit_add_ref(struct reflist *list, struct refinfo *ref)
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{
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size_t size;
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if (list->count >= list->alloc) {
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list->alloc += (list->alloc ? list->alloc : 4);
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size = list->alloc * sizeof(struct refinfo *);
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list->refs = xrealloc(list->refs, size);
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}
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list->refs[list->count++] = ref;
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}
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struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
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{
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struct refinfo *ref;
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ref = xmalloc(sizeof (struct refinfo));
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ref->refname = xstrdup(refname);
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ref->object = parse_object(sha1);
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switch (ref->object->type) {
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case OBJ_TAG:
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ref->tag = cgit_parse_tag((struct tag *)ref->object);
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break;
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case OBJ_COMMIT:
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ref->commit = cgit_parse_commit((struct commit *)ref->object);
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break;
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}
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return ref;
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}
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int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
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void *cb_data)
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{
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struct reflist *list = (struct reflist *)cb_data;
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struct refinfo *info = cgit_mk_refinfo(refname, sha1);
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if (info)
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cgit_add_ref(list, info);
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return 0;
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}
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void cgit_diff_tree_cb(struct diff_queue_struct *q,
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struct diff_options *options, void *data)
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{
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int i;
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for (i = 0; i < q->nr; i++) {
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if (q->queue[i]->status == 'U')
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continue;
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((filepair_fn)data)(q->queue[i]);
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}
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}
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static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
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{
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enum object_type type;
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if (is_null_sha1(sha1)) {
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file->ptr = (char *)"";
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file->size = 0;
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} else {
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file->ptr = read_sha1_file(sha1, &type,
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(unsigned long *)&file->size);
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}
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return 1;
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}
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/*
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* Receive diff-buffers from xdiff and concatenate them as
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* needed across multiple callbacks.
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*
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* This is basically a copy of xdiff-interface.c/xdiff_outf(),
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* ripped from git and modified to use globals instead of
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* a special callback-struct.
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*/
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char *diffbuf = NULL;
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int buflen = 0;
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int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
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{
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int i;
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for (i = 0; i < nbuf; i++) {
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if (mb[i].ptr[mb[i].size-1] != '\n') {
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/* Incomplete line */
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diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
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memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
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buflen += mb[i].size;
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continue;
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}
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/* we have a complete line */
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if (!diffbuf) {
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((linediff_fn)priv)(mb[i].ptr, mb[i].size);
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continue;
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}
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diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
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memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
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((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
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free(diffbuf);
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diffbuf = NULL;
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buflen = 0;
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}
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if (diffbuf) {
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((linediff_fn)priv)(diffbuf, buflen);
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free(diffbuf);
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diffbuf = NULL;
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buflen = 0;
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}
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return 0;
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}
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int cgit_diff_files(const unsigned char *old_sha1,
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const unsigned char *new_sha1,
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linediff_fn fn)
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{
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mmfile_t file1, file2;
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xpparam_t diff_params;
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xdemitconf_t emit_params;
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xdemitcb_t emit_cb;
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if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
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return 1;
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diff_params.flags = XDF_NEED_MINIMAL;
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emit_params.ctxlen = 3;
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emit_params.flags = XDL_EMIT_FUNCNAMES;
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emit_params.find_func = NULL;
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emit_cb.outf = filediff_cb;
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emit_cb.priv = fn;
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xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
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return 0;
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}
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void cgit_diff_tree(const unsigned char *old_sha1,
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const unsigned char *new_sha1,
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filepair_fn fn, const char *prefix)
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{
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struct diff_options opt;
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int ret;
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int prefixlen;
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diff_setup(&opt);
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opt.output_format = DIFF_FORMAT_CALLBACK;
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opt.detect_rename = 1;
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opt.rename_limit = cgit_renamelimit;
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opt.recursive = 1;
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opt.format_callback = cgit_diff_tree_cb;
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opt.format_callback_data = fn;
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if (prefix) {
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opt.nr_paths = 1;
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opt.paths = &prefix;
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prefixlen = strlen(prefix);
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opt.pathlens = &prefixlen;
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}
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diff_setup_done(&opt);
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if (old_sha1 && !is_null_sha1(old_sha1))
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ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
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else
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ret = diff_root_tree_sha1(new_sha1, "", &opt);
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diffcore_std(&opt);
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diff_flush(&opt);
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}
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void cgit_diff_commit(struct commit *commit, filepair_fn fn)
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{
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unsigned char *old_sha1 = NULL;
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if (commit->parents)
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old_sha1 = commit->parents->item->object.sha1;
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cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
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}
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