stagit
Personal fork of stagit
git clone git://mccd.space/stagit
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stagit-index.c (6286B)
1 #include <err.h>
2 #include <limits.h>
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <string.h>
6 #include <time.h>
7 #include <unistd.h>
8
9 #include <git2.h>
10
11 static git_repository *repo;
12
13 static const char *relpath = "";
14
15 static char description[255] = "Repositories";
16 static char *name = "";
17 static char owner[255];
18
19 /* Handle read or write errors for a FILE * stream */
20 void
21 checkfileerror(FILE *fp, const char *name, int mode)
22 {
23 if (mode == 'r' && ferror(fp))
24 errx(1, "read error: %s", name);
25 else if (mode == 'w' && (fflush(fp) || ferror(fp)))
26 errx(1, "write error: %s", name);
27 }
28
29 void
30 joinpath(char *buf, size_t bufsiz, const char *path, const char *path2)
31 {
32 int r;
33
34 r = snprintf(buf, bufsiz, "%s%s%s",
35 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
36 if (r < 0 || (size_t)r >= bufsiz)
37 errx(1, "path truncated: '%s%s%s'",
38 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
39 }
40
41 /* Percent-encode, see RFC3986 section 2.1. */
42 void
43 percentencode(FILE *fp, const char *s, size_t len)
44 {
45 static char tab[] = "0123456789ABCDEF";
46 unsigned char uc;
47 size_t i;
48
49 for (i = 0; *s && i < len; s++, i++) {
50 uc = *s;
51 /* NOTE: do not encode '/' for paths or ",-." */
52 if (uc < ',' || uc >= 127 || (uc >= ':' && uc <= '@') ||
53 uc == '[' || uc == ']') {
54 putc('%', fp);
55 putc(tab[(uc >> 4) & 0x0f], fp);
56 putc(tab[uc & 0x0f], fp);
57 } else {
58 putc(uc, fp);
59 }
60 }
61 }
62
63 /* Escape characters below as HTML 2.0 / XML 1.0. */
64 void
65 xmlencode(FILE *fp, const char *s, size_t len)
66 {
67 size_t i;
68
69 for (i = 0; *s && i < len; s++, i++) {
70 switch(*s) {
71 case '<': fputs("<", fp); break;
72 case '>': fputs(">", fp); break;
73 case '\'': fputs("'" , fp); break;
74 case '&': fputs("&", fp); break;
75 case '"': fputs(""", fp); break;
76 default: putc(*s, fp);
77 }
78 }
79 }
80
81 void
82 printtimeshort(FILE *fp, const git_time *intime)
83 {
84 struct tm *intm;
85 time_t t;
86 char out[32];
87
88 t = (time_t)intime->time;
89 if (!(intm = gmtime(&t)))
90 return;
91 strftime(out, sizeof(out), "%Y-%m-%d %H:%M", intm);
92 fputs(out, fp);
93 }
94
95 void
96 writeheader(FILE *fp)
97 {
98 fputs("<!DOCTYPE html>\n"
99 "<html>\n<head>\n"
100 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
101 "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\" />\n"
102 "<title>", fp);
103 xmlencode(fp, description, strlen(description));
104 fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
105 fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"/css/main.css\" />\n");
106 fputs("</head>\n<body>\n", fp);
107 fputs("<header><nav><a class=\"logo\" id=\"logo\" href=\"/\">mccd</a><ul><li><a href=\"https://merveilles.town/@mccd\">mastodon</a></li><li><a href=\"/feed.xml\">rss</a></li><li><a href=\"/git\">git</a></li><li><a href=\"/wiki\">wiki</a></li></ul></nav></header>", fp);
108
109 fputs("<main id=\"git-content\"><h1 class=\"title\">Repositories</h1>\n"
110 "<table id=\"index\"><thead>\n"
111 "<tr><td><b>Name</b></td><td><b>Description</b></td>"
112 "<td><b>Last commit</b></td></tr>"
113 "</thead><tbody>\n", fp);
114 }
115
116 void
117 writefooter(FILE *fp)
118 {
119 fputs("</tbody>\n</table>\n</main>\n</body>\n</html>\n", fp);
120 }
121
122 int
123 writelog(FILE *fp)
124 {
125 git_commit *commit = NULL;
126 const git_signature *author;
127 git_revwalk *w = NULL;
128 git_oid id;
129 char *stripped_name = NULL, *p;
130 int ret = 0;
131
132 git_revwalk_new(&w, repo);
133 git_revwalk_push_head(w);
134
135 if (git_revwalk_next(&id, w) ||
136 git_commit_lookup(&commit, repo, &id)) {
137 ret = -1;
138 goto err;
139 }
140
141 author = git_commit_author(commit);
142
143 /* strip .git suffix */
144 if (!(stripped_name = strdup(name)))
145 err(1, "strdup");
146 if ((p = strrchr(stripped_name, '.')))
147 if (!strcmp(p, ".git"))
148 *p = '\0';
149
150 fputs("<tr><td><a href=\"", fp);
151 /* Prepend base path */
152 fputs("/git/", fp);
153 percentencode(fp, stripped_name, strlen(stripped_name));
154 fputs("/log.html\">", fp);
155 xmlencode(fp, stripped_name, strlen(stripped_name));
156 fputs("</a></td><td>", fp);
157 xmlencode(fp, description, strlen(description));
158 fputs("</td><td>", fp);
159 if (author)
160 printtimeshort(fp, &(author->when));
161 fputs("</td></tr>", fp);
162
163 git_commit_free(commit);
164 err:
165 git_revwalk_free(w);
166 free(stripped_name);
167
168 return ret;
169 }
170
171 int
172 main(int argc, char *argv[])
173 {
174 FILE *fp;
175 char path[PATH_MAX], repodirabs[PATH_MAX + 1];
176 const char *repodir;
177 int i, ret = 0;
178
179 if (argc < 2) {
180 fprintf(stderr, "usage: %s [repodir...]\n", argv[0]);
181 return 1;
182 }
183
184 /* do not search outside the git repository:
185 GIT_CONFIG_LEVEL_APP is the highest level currently */
186 git_libgit2_init();
187 for (i = 1; i <= GIT_CONFIG_LEVEL_APP; i++)
188 git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, i, "");
189 /* do not require the git repository to be owned by the current user */
190 git_libgit2_opts(GIT_OPT_SET_OWNER_VALIDATION, 0);
191
192 #ifdef __OpenBSD__
193 if (pledge("stdio rpath", NULL) == -1)
194 err(1, "pledge");
195 #endif
196
197 writeheader(stdout);
198
199 for (i = 1; i < argc; i++) {
200 repodir = argv[i];
201 if (!realpath(repodir, repodirabs))
202 err(1, "realpath");
203
204 if (git_repository_open_ext(&repo, repodir,
205 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) {
206 fprintf(stderr, "%s: cannot open repository\n", argv[0]);
207 ret = 1;
208 continue;
209 }
210
211 /* use directory name as name */
212 if ((name = strrchr(repodirabs, '/')))
213 name++;
214 else
215 name = "";
216
217 /* read description or .git/description */
218 joinpath(path, sizeof(path), repodir, "description");
219 if (!(fp = fopen(path, "r"))) {
220 joinpath(path, sizeof(path), repodir, ".git/description");
221 fp = fopen(path, "r");
222 }
223 description[0] = '\0';
224 if (fp) {
225 if (!fgets(description, sizeof(description), fp))
226 description[0] = '\0';
227 checkfileerror(fp, "description", 'r');
228 fclose(fp);
229 }
230
231 /* read owner or .git/owner */
232 joinpath(path, sizeof(path), repodir, "owner");
233 if (!(fp = fopen(path, "r"))) {
234 joinpath(path, sizeof(path), repodir, ".git/owner");
235 fp = fopen(path, "r");
236 }
237 owner[0] = '\0';
238 if (fp) {
239 if (!fgets(owner, sizeof(owner), fp))
240 owner[0] = '\0';
241 checkfileerror(fp, "owner", 'r');
242 fclose(fp);
243 owner[strcspn(owner, "\n")] = '\0';
244 }
245 writelog(stdout);
246 }
247 writefooter(stdout);
248
249 /* cleanup */
250 git_repository_free(repo);
251 git_libgit2_shutdown();
252
253 checkfileerror(stdout, "<stdout>", 'w');
254
255 return ret;
256 }