File: scan-tree.c

package info (click to toggle)
cgit 1.2.1+git2.18.0-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 37,580 kB
  • sloc: ansic: 207,716; sh: 172,917; perl: 28,960; tcl: 21,663; python: 6,441; makefile: 3,642; php: 120; asm: 98; csh: 45; ruby: 24; lisp: 12
file content (270 lines) | stat: -rw-r--r-- 6,505 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
/* scan-tree.c
 *
 * 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 "scan-tree.h"
#include "configfile.h"
#include "html.h"
#include <config.h>

/* return 1 if path contains a objects/ directory and a HEAD file */
static int is_git_dir(const char *path)
{
	struct stat st;
	struct strbuf pathbuf = STRBUF_INIT;
	int result = 0;

	strbuf_addf(&pathbuf, "%s/objects", path);
	if (stat(pathbuf.buf, &st)) {
		if (errno != ENOENT)
			fprintf(stderr, "Error checking path %s: %s (%d)\n",
				path, strerror(errno), errno);
		goto out;
	}
	if (!S_ISDIR(st.st_mode))
		goto out;

	strbuf_reset(&pathbuf);
	strbuf_addf(&pathbuf, "%s/HEAD", path);
	if (stat(pathbuf.buf, &st)) {
		if (errno != ENOENT)
			fprintf(stderr, "Error checking path %s: %s (%d)\n",
				path, strerror(errno), errno);
		goto out;
	}
	if (!S_ISREG(st.st_mode))
		goto out;

	result = 1;
out:
	strbuf_release(&pathbuf);
	return result;
}

static struct cgit_repo *repo;
static repo_config_fn config_fn;

static void scan_tree_repo_config(const char *name, const char *value)
{
	config_fn(repo, name, value);
}

static int gitconfig_config(const char *key, const char *value, void *cb)
{
	const char *name;

	if (!strcmp(key, "gitweb.owner"))
		config_fn(repo, "owner", value);
	else if (!strcmp(key, "gitweb.description"))
		config_fn(repo, "desc", value);
	else if (!strcmp(key, "gitweb.category"))
		config_fn(repo, "section", value);
	else if (!strcmp(key, "gitweb.homepage"))
		config_fn(repo, "homepage", value);
	else if (skip_prefix(key, "cgit.", &name))
		config_fn(repo, name, value);

	return 0;
}

static char *xstrrchr(char *s, char *from, int c)
{
	while (from >= s && *from != c)
		from--;
	return from < s ? NULL : from;
}

static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)
{
	struct stat st;
	struct passwd *pwd;
	size_t pathlen;
	struct strbuf rel = STRBUF_INIT;
	char *p, *slash;
	int n;
	size_t size;

	if (stat(path->buf, &st)) {
		fprintf(stderr, "Error accessing %s: %s (%d)\n",
			path->buf, strerror(errno), errno);
		return;
	}

	strbuf_addch(path, '/');
	pathlen = path->len;

	if (ctx.cfg.strict_export) {
		strbuf_addstr(path, ctx.cfg.strict_export);
		if(stat(path->buf, &st))
			return;
		strbuf_setlen(path, pathlen);
	}

	strbuf_addstr(path, "noweb");
	if (!stat(path->buf, &st))
		return;
	strbuf_setlen(path, pathlen);

	if (!starts_with(path->buf, base))
		strbuf_addbuf(&rel, path);
	else
		strbuf_addstr(&rel, path->buf + strlen(base) + 1);

	if (!strcmp(rel.buf + rel.len - 5, "/.git"))
		strbuf_setlen(&rel, rel.len - 5);
	else if (rel.len && rel.buf[rel.len - 1] == '/')
		strbuf_setlen(&rel, rel.len - 1);

	repo = cgit_add_repo(rel.buf);
	config_fn = fn;
	if (ctx.cfg.enable_git_config) {
		strbuf_addstr(path, "config");
		git_config_from_file(gitconfig_config, path->buf, NULL);
		strbuf_setlen(path, pathlen);
	}

	if (ctx.cfg.remove_suffix) {
		size_t urllen;
		strip_suffix(repo->url, ".git", &urllen);
		strip_suffix_mem(repo->url, &urllen, "/");
		repo->url[urllen] = '\0';
	}
	repo->path = xstrdup(path->buf);
	while (!repo->owner) {
		if ((pwd = getpwuid(st.st_uid)) == NULL) {
			fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
				path->buf, strerror(errno), errno);
			break;
		}
		if (pwd->pw_gecos)
			if ((p = strchr(pwd->pw_gecos, ',')))
				*p = '\0';
		repo->owner = xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name);
	}

	if (repo->desc == cgit_default_repo_desc || !repo->desc) {
		strbuf_addstr(path, "description");
		if (!stat(path->buf, &st))
			readfile(path->buf, &repo->desc, &size);
		strbuf_setlen(path, pathlen);
	}

	if (ctx.cfg.section_from_path) {
		n = ctx.cfg.section_from_path;
		if (n > 0) {
			slash = rel.buf - 1;
			while (slash && n && (slash = strchr(slash + 1, '/')))
				n--;
		} else {
			slash = rel.buf + rel.len;
			while (slash && n && (slash = xstrrchr(rel.buf, slash - 1, '/')))
				n++;
		}
		if (slash && !n) {
			*slash = '\0';
			repo->section = xstrdup(rel.buf);
			*slash = '/';
			if (starts_with(repo->name, repo->section)) {
				repo->name += strlen(repo->section);
				if (*repo->name == '/')
					repo->name++;
			}
		}
	}

	strbuf_addstr(path, "cgitrc");
	if (!stat(path->buf, &st))
		parse_configfile(path->buf, &scan_tree_repo_config);

	strbuf_release(&rel);
}

static void scan_path(const char *base, const char *path, repo_config_fn fn)
{
	DIR *dir = opendir(path);
	struct dirent *ent;
	struct strbuf pathbuf = STRBUF_INIT;
	size_t pathlen = strlen(path);
	struct stat st;

	if (!dir) {
		fprintf(stderr, "Error opening directory %s: %s (%d)\n",
			path, strerror(errno), errno);
		return;
	}

	strbuf_add(&pathbuf, path, strlen(path));
	if (is_git_dir(pathbuf.buf)) {
		add_repo(base, &pathbuf, fn);
		goto end;
	}
	strbuf_addstr(&pathbuf, "/.git");
	if (is_git_dir(pathbuf.buf)) {
		add_repo(base, &pathbuf, fn);
		goto end;
	}
	/*
	 * Add one because we don't want to lose the trailing '/' when we
	 * reset the length of pathbuf in the loop below.
	 */
	pathlen++;
	while ((ent = readdir(dir)) != NULL) {
		if (ent->d_name[0] == '.') {
			if (ent->d_name[1] == '\0')
				continue;
			if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
				continue;
			if (!ctx.cfg.scan_hidden_path)
				continue;
		}
		strbuf_setlen(&pathbuf, pathlen);
		strbuf_addstr(&pathbuf, ent->d_name);
		if (stat(pathbuf.buf, &st)) {
			fprintf(stderr, "Error checking path %s: %s (%d)\n",
				pathbuf.buf, strerror(errno), errno);
			continue;
		}
		if (S_ISDIR(st.st_mode))
			scan_path(base, pathbuf.buf, fn);
	}
end:
	strbuf_release(&pathbuf);
	closedir(dir);
}

void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn)
{
	struct strbuf line = STRBUF_INIT;
	FILE *projects;
	int err;

	projects = fopen(projectsfile, "r");
	if (!projects) {
		fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
			projectsfile, strerror(errno), errno);
		return;
	}
	while (strbuf_getline(&line, projects) != EOF) {
		if (!line.len)
			continue;
		strbuf_insert(&line, 0, "/", 1);
		strbuf_insert(&line, 0, path, strlen(path));
		scan_path(path, line.buf, fn);
	}
	if ((err = ferror(projects))) {
		fprintf(stderr, "Error reading from projectsfile %s: %s (%d)\n",
			projectsfile, strerror(err), err);
	}
	fclose(projects);
	strbuf_release(&line);
}

void scan_tree(const char *path, repo_config_fn fn)
{
	scan_path(path, path, fn);
}