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

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