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* Switch to exclusively using global ctxLukas Fleischer2014-01-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the context parameter from the following functions (and all static helpers used by them) and use the global context instead: * cgit_print_http_headers() * cgit_print_docstart() * cgit_print_pageheader() Remove context parameter from all commands Drop the context parameter from the following functions (and all static helpers used by them) and use the global context instead: * cgit_get_cmd() * All cgit command functions. * cgit_clone_info() * cgit_clone_objects() * cgit_clone_head() * cgit_print_plain() * cgit_show_stats() In initialization routines, use the global context variable instead of passing a pointer around locally. Remove callback data parameter for cache slots This is no longer needed since the context is always read from the global context variable. Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
* ui-stats.c: Remove unused macroLukas Fleischer2014-01-08
| | | | Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
* Convert cgit_print_error to a variadic functionJohn Keeping2013-04-08
| | | | | | | | | This removes many uses of "fmt" which uses a fixed size static pool of fixed size buffers. Instead of relying on these, we now pass around argument lists for as long as possible before using a strbuf to render content of an arbitrary size. Signed-off-by: John Keeping <john@keeping.me.uk>
* Always #include corresponding .h in .c filesJohn Keeping2013-04-08
| | | | | | | | | | | | While doing this, remove declarations from header files where the corresponding definition is declared "static" in order to avoid build errors. Also re-order existing headers in ui-*.c so that the file-specific header always comes immediately after "cgit.h", helping with future consistency. Signed-off-by: John Keeping <john@keeping.me.uk>
* Mark several functions/variables staticLukas Fleischer2013-03-04
| | | | | | Spotted by parsing the output of `gcc -Wmissing-prototypes [...]`. Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
* White space around control verbs.Jason A. Donenfeld2013-03-04
| | | | Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* Fix several whitespace errorsLukas Fleischer2013-03-04
| | | | | | | | | | * Remove whitespace at the end of lines. * Replace space indentation by tabs. * Add whitespace before/after several operators ("+", "-", "*", ...) * Add whitespace to assignments ("foo = bar;"). * Fix whitespace in parameter lists ("foobar(foo, bar, 42)"). Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
* Update git to v1.7.5.4John Keeping2013-03-02
| | | | | | | | | Some changes to diff options: - no_merges has become the more general max_parents - path restriction now uses struct pathspec Signed-off-by: John Keeping <john@keeping.me.uk>
* ui-stats.c: fix invalid htmlLars Hjemli2011-05-30
| | | | | | Found by http://validator.w3.org. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
* ui-stats.c: create a control panel for stat optionsLars Hjemli2011-03-07
| | | | Signed-off-by: Lars Hjemli <hjemli@gmail.com>
* ui-stats: Remove unnecessary #includeJohan Herland2010-11-16
| | | | | | | <string-list.h> is already #included from cgit.h Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Lars Hjemli <hjemli@gmail.com>
* fix errors in printf-style format stringsMark Lodato2010-09-04
| | | | | | | | | | | | | | | | | There were many places where the arguments to a printf-like function did not match the format string. Mostly, these were a missing 'l' flag, but there were three exceptions: - In ui-stats.c, a size_t argument must be printed. C99 has the "%zu" flag for this purpose, but not all compilers support this. Therefore, we mimic what git does - use a NO_C99_FORMAT Makefile variable. - In ui-stats.c, cgit_print_error() was called with a pointer instead of a character. - In ui-log.c, the "columns" argument was never used. Signed-off-by: Mark Lodato <lodatom@gmail.com>
* Use GIT-1.7.2.2Lars Hjemli2010-08-22
| | | | Signed-off-by: Lars Hjemli <hjemli@gmail.com>
* Add and use cgit_find_stats_periodname() in print_repo()Lars Hjemli2009-08-24
| | | | Signed-off-by: Lars Hjemli <hjemli@gmail.com>
* ui-stats.c: reuse cgit_add_hidden_formfields()Lars Hjemli2008-12-07
| | | | | | | This makes sure that the currect branch and path is preserved when changing the stats period or author count. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
* ui-stats: replace 'enable-stats' setting with 'max-stats'Lars Hjemli2008-12-07
| | | | | | | | | The new 'max-stats' and 'repo.max-stats' settings makes it possible to define the maximum statistics period, both globally and per repo. Hence, it is now feasible to allow statistics on repositories with a high commit frequency, like linux-2.6, by setting repo.max-stats to e.g. 'month'. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
* ui-stats: enable path-filtered statsLars Hjemli2008-12-07
| | | | | | | When a path is specified on the querystring the commit statistics will now be filtered by this path. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
* Add a 'stats' page to each repoLars Hjemli2008-12-06
This new page, which is disabled by default, can be used to print some statistics about the number of commits per period in the repository, where period can be either weeks, months, quarters or years. The function can be activated globally by setting 'enable-stats=1' in cgitrc and disabled for individual repos by setting 'repo.enable-stats=0'. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
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/* shared.c: global vars + some callback functions
 *
 * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include <stdio.h>

struct cgit_repolist cgit_repolist;
struct cgit_context ctx;

int chk_zero(int result, char *msg)
{
	if (result != 0)
		die_errno("%s", msg);
	return result;
}

int chk_positive(int result, char *msg)
{
	if (result <= 0)
		die_errno("%s", msg);
	return result;
}

int chk_non_negative(int result, char *msg)
{
	if (result < 0)
		die_errno("%s", msg);
	return result;
}

char *cgit_default_repo_desc = "[no description]";
struct cgit_repo *cgit_add_repo(const char *url)
{
	struct cgit_repo *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 cgit_repo));
	}

	ret = &cgit_repolist.repos[cgit_repolist.count-1];
	memset(ret, 0, sizeof(struct cgit_repo));
	ret->url = trim_end(url, '/');
	ret->name = ret->url;
	ret->path = NULL;
	ret->desc = cgit_default_repo_desc;
	ret->owner = NULL;
	ret->section = ctx.cfg.section;
	ret->snapshots = ctx.cfg.snapshots;
	ret->enable_commit_graph = ctx.cfg.enable_commit_graph;
	ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
	ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
	ret->enable_remote_branches = ctx.cfg.enable_remote_branches;
	ret->enable_subject_links = ctx.cfg.enable_subject_links;
	ret->max_stats = ctx.cfg.max_stats;
	ret->branch_sort = ctx.cfg.branch_sort;
	ret->commit_sort = ctx.cfg.commit_sort;
	ret->module_link = ctx.cfg.module_link;
	ret->readme = ctx.cfg.readme;
	ret->mtime = -1;
	ret->about_filter = ctx.cfg.about_filter;
	ret->commit_filter = ctx.cfg.commit_filter;
	ret->source_filter = ctx.cfg.source_filter;
	ret->email_filter = ctx.cfg.email_filter;
	ret->clone_url = ctx.cfg.clone_url;
	ret->submodules.strdup_strings = 1;
	return ret;
}

struct cgit_repo *cgit_get_repoinfo(const char *url)
{
	int i;
	struct cgit_repo *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_free_commitinfo(struct commitinfo *info)
{
	free(info->author);
	free(info->author_email);
	free(info->committer);
	free(info->committer_email);
	free(info->subject);
	free(info->msg);
	free(info->msg_encoding);
	free(info);
	return NULL;
}

char *trim_end(const char *str, char c)
{
	int len;

	if (str == NULL)
		return NULL;
	len = strlen(str);
	while (len > 0 && str[len - 1] == c)
		len--;
	if (len == 0)
		return NULL;
	return xstrndup(str, len);
}

char *ensure_end(const char *str, char c)
{
	size_t len = strlen(str);
	char *result;

	if (len && str[len - 1] == c)
		return xstrndup(str, len);

	result = xmalloc(len + 2);
	memcpy(result, str, len);
	result[len] = '/';
	result[len + 1] = '\0';
	return result;
}

void strbuf_ensure_end(struct strbuf *sb, char c)
{
	if (!sb->len || sb->buf[sb->len - 1] != c)
		strbuf_addch(sb, c);
}

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;
}

static 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;
}

static void cgit_free_taginfo(struct taginfo *tag)
{
	if (tag->tagger)
		free(tag->tagger);
	if (tag->tagger_email)
		free(tag->tagger_email);
	if (tag->msg)
		free(tag->msg);
	free(tag);
}

static void cgit_free_refinfo(struct refinfo *ref)
{
	if (ref->refname)
		free((char *)ref->refname);
	switch (ref->object->type) {
	case OBJ_TAG:
		cgit_free_taginfo(ref->tag);
		break;
	case OBJ_COMMIT:
		cgit_free_commitinfo(ref->commit);
		break;
	}
	free(ref);
}

void cgit_free_reflist_inner(struct reflist *list)
{
	int i;

	for (i = 0; i < list->count; i++) {
		cgit_free_refinfo(list->refs[i]);
	}
	free(list->refs);
}

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;
}

static 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;

static 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, unsigned long *old_size,
		    unsigned long *new_size, int *binary, int context,
		    int ignorews, 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;

	*old_size = file1.size;
	*new_size = file2.size;

	if ((file1.ptr && buffer_is_binary(file1.ptr, file1.size)) ||
	    (file2.ptr && buffer_is_binary(file2.ptr, file2.size))) {
		*binary = 1;
		if (file1.size)
			free(file1.ptr);
		if (file2.size)
			free(file2.ptr);
		return 0;
	}

	memset(&diff_params, 0, sizeof(diff_params));
	memset(&emit_params, 0, sizeof(emit_params));
	memset(&emit_cb, 0, sizeof(emit_cb));
	diff_params.flags = XDF_NEED_MINIMAL;
	if (ignorews)
		diff_params.flags |= XDF_IGNORE_WHITESPACE;
	emit_params.ctxlen = context > 0 ? context : 3;
	emit_params.flags = XDL_EMIT_FUNCNAMES;
	emit_cb.outf = filediff_cb;
	emit_cb.priv = fn;
	xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
	if (file1.size)
		free(file1.ptr);
	if (file2.size)
		free(file2.ptr);
	return 0;
}

void cgit_diff_tree(const unsigned char *old_sha1,
		    const unsigned char *new_sha1,
		    filepair_fn fn, const char *prefix, int ignorews)
{
	struct diff_options opt;
	struct pathspec_item item;

	diff_setup(&opt);
	opt.output_format = DIFF_FORMAT_CALLBACK;
	opt.detect_rename = 1;
	opt.rename_limit = ctx.cfg.renamelimit;
	DIFF_OPT_SET(&opt, RECURSIVE);
	if (ignorews)
		DIFF_XDL_SET(&opt, IGNORE_WHITESPACE);
	opt.format_callback = cgit_diff_tree_cb;
	opt.format_callback_data = fn;
	if (prefix) {
		item.match = prefix;
		item.len = strlen(prefix);
		opt.pathspec.nr = 1;
		opt.pathspec.items = &item;
	}
	diff_setup_done(&opt);

	if (old_sha1 && !is_null_sha1(old_sha1))
		diff_tree_sha1(old_sha1, new_sha1, "", &opt);
	else
		diff_root_tree_sha1(new_sha1, "", &opt);
	diffcore_std(&opt);
	diff_flush(&opt);
}

void cgit_diff_commit(struct commit *commit, filepair_fn fn, const char *prefix)
{
	unsigned char *old_sha1 = NULL;

	if (commit->parents)
		old_sha1 = commit->parents->item->object.sha1;
	cgit_diff_tree(old_sha1, commit->object.sha1, fn, prefix,
		       ctx.qry.ignorews);
}

int cgit_parse_snapshots_mask(const char *str)
{
	struct string_list tokens = STRING_LIST_INIT_DUP;
	struct string_list_item *item;
	const struct cgit_snapshot_format *f;
	int rv = 0;

	/* favor legacy setting */
	if (atoi(str))
		return 1;

	string_list_split(&tokens, str, ' ', -1);
	string_list_remove_empty_items(&tokens, 0);

	for_each_string_list_item(item, &tokens) {
		for (f = cgit_snapshot_formats; f->suffix; f++) {
			if (!strcmp(item->string, f->suffix) ||
			    !strcmp(item->string, f->suffix + 1)) {
				rv |= f->bit;
				break;
			}
		}
	}

	string_list_clear(&tokens, 0);
	return rv;
}

typedef struct {
	char * name;
	char * value;
} cgit_env_var;

void cgit_prepare_repo_env(struct cgit_repo * repo)
{
	cgit_env_var env_vars[] = {
		{ .name = "CGIT_REPO_URL", .value = repo->url },
		{ .name = "CGIT_REPO_NAME", .value = repo->name },
		{ .name = "CGIT_REPO_PATH", .value = repo->path },
		{ .name = "CGIT_REPO_OWNER", .value = repo->owner },
		{ .name = "CGIT_REPO_DEFBRANCH", .value = repo->defbranch },
		{ .name = "CGIT_REPO_SECTION", .value = repo->section },
		{ .name = "CGIT_REPO_CLONE_URL", .value = repo->clone_url }
	};
	int env_var_count = ARRAY_SIZE(env_vars);
	cgit_env_var *p, *q;
	static char *warn = "cgit warning: failed to set env: %s=%s\n";

	p = env_vars;
	q = p + env_var_count;
	for (; p < q; p++)
		if (p->value && setenv(p->name, p->value, 1))
			fprintf(stderr, warn, p->name, p->value);
}

/* Read the content of the specified file into a newly allocated buffer,
 * zeroterminate the buffer and return 0 on success, errno otherwise.
 */
int readfile(const char *path, char **buf, size_t *size)
{
	int fd, e;
	struct stat st;

	fd = open(path, O_RDONLY);
	if (fd == -1)
		return errno;
	if (fstat(fd, &st)) {
		e = errno;
		close(fd);
		return e;
	}
	if (!S_ISREG(st.st_mode)) {
		close(fd);
		return EISDIR;
	}
	*buf = xmalloc(st.st_size + 1);
	*size = read_in_full(fd, *buf, st.st_size);
	e = errno;
	(*buf)[*size] = '\0';
	close(fd);
	return (*size == st.st_size ? 0 : e);
}

static int is_token_char(char c)
{
	return isalnum(c) || c == '_';
}

/* Replace name with getenv(name), return pointer to zero-terminating char
 */
static char *expand_macro(char *name, int maxlength)
{
	char *value;
	int len;

	len = 0;
	value = getenv(name);
	if (value) {
		len = strlen(value);
		if (len > maxlength)
			len = maxlength;
		strncpy(name, value, len);
	}
	return name + len;
}

#define EXPBUFSIZE (1024 * 8)

/* Replace all tokens prefixed by '$' in the specified text with the
 * value of the named environment variable.
 * NB: the return value is a static buffer, i.e. it must be strdup'd
 * by the caller.
 */
char *expand_macros(const char *txt)
{
	static char result[EXPBUFSIZE];
	char *p, *start;
	int len;

	p = result;
	start = NULL;
	while (p < result + EXPBUFSIZE - 1 && txt && *txt) {
		*p = *txt;
		if (start) {
			if (!is_token_char(*txt)) {
				if (p - start > 0) {
					*p = '\0';
					len = result + EXPBUFSIZE - start - 1;
					p = expand_macro(start, len) - 1;
				}
				start = NULL;
				txt--;
			}
			p++;
			txt++;
			continue;
		}
		if (*txt == '$') {
			start = p;
			txt++;
			continue;
		}
		p++;
		txt++;
	}
	*p = '\0';
	if (start && p - start > 0) {
		len = result + EXPBUFSIZE - start - 1;
		p = expand_macro(start, len);
		*p = '\0';
	}
	return result;
}