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ui-log: Prevent crash when given empty range search
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1 /* ui-log.c: functions for log output
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 *
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
7 */
8
9 #include "cgit.h"
10 #include "html.h"
11 #include "ui-shared.h"
12
13 int files, add_lines, rem_lines;
14
15 void count_lines(char *line, int size)
16 {
17 if (size <= 0)
18 return;
19
20 if (line[0] == '+')
21 add_lines++;
22
23 else if (line[0] == '-')
24 rem_lines++;
25 }
26
27 void inspect_files(struct diff_filepair *pair)
28 {
29 unsigned long old_size = 0;
30 unsigned long new_size = 0;
31 int binary = 0;
32
33 files++;
34 if (ctx.repo->enable_log_linecount)
35 cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
36 &new_size, &binary, 0, ctx.qry.ignorews,
37 count_lines);
38 }
39
40 void show_commit_decorations(struct commit *commit)
41 {
42 struct name_decoration *deco;
43 static char buf[1024];
44
45 buf[sizeof(buf) - 1] = 0;
46 deco = lookup_decoration(&name_decoration, &commit->object);
47 while (deco) {
48 if (!prefixcmp(deco->name, "refs/heads/")) {
49 strncpy(buf, deco->name + 11, sizeof(buf) - 1);
50 cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
51 ctx.qry.vpath, 0, NULL, NULL,
52 ctx.qry.showmsg);
53 }
54 else if (!prefixcmp(deco->name, "tag: refs/tags/")) {
55 strncpy(buf, deco->name + 15, sizeof(buf) - 1);
56 cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
57 }
58 else if (!prefixcmp(deco->name, "refs/tags/")) {
59 strncpy(buf, deco->name + 10, sizeof(buf) - 1);
60 cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
61 }
62 else if (!prefixcmp(deco->name, "refs/remotes/")) {
63 strncpy(buf, deco->name + 13, sizeof(buf) - 1);
64 cgit_log_link(buf, NULL, "remote-deco", NULL,
65 sha1_to_hex(commit->object.sha1),
66 ctx.qry.vpath, 0, NULL, NULL,
67 ctx.qry.showmsg);
68 }
69 else {
70 strncpy(buf, deco->name, sizeof(buf) - 1);
71 cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
72 sha1_to_hex(commit->object.sha1),
73 ctx.qry.vpath, 0);
74 }
75 deco = deco->next;
76 }
77 }
78
79 void print_commit(struct commit *commit)
80 {
81 struct commitinfo *info;
82 char *tmp;
83 int cols = 2;
84
85 info = cgit_parse_commit(commit);
86 htmlf("<tr%s><td>",
87 ctx.qry.showmsg ? " class='logheader'" : "");
88 tmp = fmt("id=%s", sha1_to_hex(commit->object.sha1));
89 tmp = cgit_fileurl(ctx.repo->url, "commit", ctx.qry.vpath, tmp);
90 html_link_open(tmp, NULL, NULL);
91 cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
92 html_link_close();
93 htmlf("</td><td%s>",
94 ctx.qry.showmsg ? " class='logsubject'" : "");
95 cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
96 sha1_to_hex(commit->object.sha1), ctx.qry.vpath, 0);
97 show_commit_decorations(commit);
98 html("</td><td>");
99 html_txt(info->author);
100 if (ctx.repo->enable_log_filecount) {
101 files = 0;
102 add_lines = 0;
103 rem_lines = 0;
104 cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
105 html("</td><td>");
106 htmlf("%d", files);
107 if (ctx.repo->enable_log_linecount) {
108 html("</td><td>");
109 htmlf("-%d/+%d", rem_lines, add_lines);
110 }
111 }
112 html("</td></tr>\n");
113 if (ctx.qry.showmsg) {
114 struct strbuf notes = STRBUF_INIT;
115 format_note(NULL, commit->object.sha1, &notes, PAGE_ENCODING, 0);
116
117 if (ctx.repo->enable_log_filecount) {
118 cols++;
119 if (ctx.repo->enable_log_linecount)
120 cols++;
121 }
122 htmlf("<tr class='nohover'><td/><td colspan='%d' class='logmsg'>",
123 cols);
124 html_txt(info->msg);
125 html("</td></tr>\n");
126 if (notes.len != 0) {
127 html("<tr class='nohover'>");
128 html("<td class='lognotes-label'>Notes:</td>");
129 htmlf("<td colspan='%d' class='lognotes'>",
130 cols);
131 html_txt(notes.buf);
132 html("</td></tr>\n");
133 }
134 strbuf_release(&notes);
135 }
136 cgit_free_commitinfo(info);
137 }
138
139 static const char *disambiguate_ref(const char *ref)
140 {
141 unsigned char sha1[20];
142 const char *longref;
143
144 longref = fmt("refs/heads/%s", ref);
145 if (get_sha1(longref, sha1) == 0)
146 return longref;
147
148 return ref;
149 }
150
151 void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
152 char *path, int pager)
153 {
154 struct rev_info rev;
155 struct commit *commit;
156 const char *argv[] = {NULL, NULL, NULL, NULL, NULL};
157 int argc = 2;
158 int i, columns = 3;
159
160 if (!tip)
161 tip = ctx.qry.head;
162
163 argv[1] = disambiguate_ref(tip);
164
165 if (grep && pattern && *pattern) {
166 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
167 !strcmp(grep, "committer"))
168 argv[argc++] = fmt("--%s=%s", grep, pattern);
169 if (!strcmp(grep, "range"))
170 argv[1] = pattern;
171 }
172
173 if (path) {
174 argv[argc++] = "--";
175 argv[argc++] = path;
176 }
177 init_revisions(&rev, NULL);
178 rev.abbrev = DEFAULT_ABBREV;
179 rev.commit_format = CMIT_FMT_DEFAULT;
180 rev.verbose_header = 1;
181 rev.show_root_diff = 0;
182 setup_revisions(argc, argv, &rev, NULL);
183 load_ref_decorations(DECORATE_FULL_REFS);
184 rev.show_decorations = 1;
185 rev.grep_filter.regflags |= REG_ICASE;
186 compile_grep_patterns(&rev.grep_filter);
187 prepare_revision_walk(&rev);
188
189 if (pager)
190 html("<table class='list nowrap'>");
191
192 html("<tr class='nohover'><th class='left'>Age</th>"
193 "<th class='left'>Commit message");
194 if (pager) {
195 html(" (");
196 cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
197 NULL, ctx.qry.head, ctx.qry.sha1,
198 ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
199 ctx.qry.search, ctx.qry.showmsg ? 0 : 1);
200 html(")");
201 }
202 html("</th><th class='left'>Author</th>");
203 if (ctx.repo->enable_log_filecount) {
204 html("<th class='left'>Files</th>");
205 columns++;
206 if (ctx.repo->enable_log_linecount) {
207 html("<th class='left'>Lines</th>");
208 columns++;
209 }
210 }
211 html("</tr>\n");
212
213 if (ofs<0)
214 ofs = 0;
215
216 for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {
217 free(commit->buffer);
218 commit->buffer = NULL;
219 free_commit_list(commit->parents);
220 commit->parents = NULL;
221 }
222
223 for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
224 print_commit(commit);
225 free(commit->buffer);
226 commit->buffer = NULL;
227 free_commit_list(commit->parents);
228 commit->parents = NULL;
229 }
230 if (pager) {
231 html("</table><div class='pager'>");
232 if (ofs > 0) {
233 cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
234 ctx.qry.sha1, ctx.qry.vpath,
235 ofs - cnt, ctx.qry.grep,
236 ctx.qry.search, ctx.qry.showmsg);
237 html("&nbsp;");
238 }
239 if ((commit = get_revision(&rev)) != NULL) {
240 cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
241 ctx.qry.sha1, ctx.qry.vpath,
242 ofs + cnt, ctx.qry.grep,
243 ctx.qry.search, ctx.qry.showmsg);
244 }
245 html("</div>");
246 } else if ((commit = get_revision(&rev)) != NULL) {
247 html("<tr class='nohover'><td colspan='3'>");
248 cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
249 ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg);
250 html("</td></tr>\n");
251 }
252 }