cgit/ui-log.c
Jason A. Donenfeld 8a92df033e Do not load user or system gitconfig and gitattributes
While doing any kind of git loading, unset HOME variables and set
NOSYSTEM variables so that cgit does not load any settings that a user
may have set for his own /usr/bin/git usage.

This fixes a fatal error introduced with git 1.8, whereupon git would
fatally exit when failing to access particular files.

The result of this is that only repo-local configuration files are
accessed:

zx2c4@thinkpad ~/Projects/cgit $ HOME=/root QUERY_STRING="url=foo/log"
CGIT_CONFIG=tests/trash/cgitrc strace -e access ./cgit >/dev/null
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
access("repos/foo/.git/objects", X_OK) = 0
access("repos/foo/.git/refs", X_OK) = 0
access("repos/foo/.git/config", R_OK) = 0
access("repos/foo/.git/config", R_OK) = 0
access("repos/foo/.git/objects/b3/bafdbf0183f4897ef8b1319cb8c490ed54717e", F_OK) = 0
access("repos/foo/.git/objects/b3/bafdbf0183f4897ef8b1319cb8c490ed54717e", F_OK) = 0
access("repos/foo/.git/objects/b3/bafdbf0183f4897ef8b1319cb8c490ed54717e", F_OK) = 0
access("repos/foo/.git/objects/b3/bafdbf0183f4897ef8b1319cb8c490ed54717e", F_OK) = 0
+++ exited with 0 +++

Reported-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Tested-by: Jason A. Donenfeld <Jason@zx2c4.com>
Tested-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2013-04-08 21:43:26 +02:00

444 lines
11 KiB
C

/* ui-log.c: functions for log output
*
* Copyright (C) 2006 Lars Hjemli
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
*/
#include "cgit.h"
#include "ui-log.h"
#include "html.h"
#include "ui-shared.h"
#include "vector.h"
int files, add_lines, rem_lines;
/*
* The list of available column colors in the commit graph.
*/
static const char *column_colors_html[] = {
"<span class='column1'>",
"<span class='column2'>",
"<span class='column3'>",
"<span class='column4'>",
"<span class='column5'>",
"<span class='column6'>",
"</span>",
};
#define COLUMN_COLORS_HTML_MAX (ARRAY_SIZE(column_colors_html) - 1)
static void count_lines(char *line, int size)
{
if (size <= 0)
return;
if (line[0] == '+')
add_lines++;
else if (line[0] == '-')
rem_lines++;
}
static void inspect_files(struct diff_filepair *pair)
{
unsigned long old_size = 0;
unsigned long new_size = 0;
int binary = 0;
files++;
if (ctx.repo->enable_log_linecount)
cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
&new_size, &binary, 0, ctx.qry.ignorews,
count_lines);
}
void show_commit_decorations(struct commit *commit)
{
struct name_decoration *deco;
static char buf[1024];
buf[sizeof(buf) - 1] = 0;
deco = lookup_decoration(&name_decoration, &commit->object);
while (deco) {
if (!prefixcmp(deco->name, "refs/heads/")) {
strncpy(buf, deco->name + 11, sizeof(buf) - 1);
cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
ctx.qry.vpath, 0, NULL, NULL,
ctx.qry.showmsg);
}
else if (!prefixcmp(deco->name, "tag: refs/tags/")) {
strncpy(buf, deco->name + 15, sizeof(buf) - 1);
cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
}
else if (!prefixcmp(deco->name, "refs/tags/")) {
strncpy(buf, deco->name + 10, sizeof(buf) - 1);
cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
}
else if (!prefixcmp(deco->name, "refs/remotes/")) {
if (!ctx.repo->enable_remote_branches)
goto next;
strncpy(buf, deco->name + 13, sizeof(buf) - 1);
cgit_log_link(buf, NULL, "remote-deco", NULL,
sha1_to_hex(commit->object.sha1),
ctx.qry.vpath, 0, NULL, NULL,
ctx.qry.showmsg);
}
else {
strncpy(buf, deco->name, sizeof(buf) - 1);
cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
sha1_to_hex(commit->object.sha1),
ctx.qry.vpath, 0);
}
next:
deco = deco->next;
}
}
static void print_commit(struct commit *commit, struct rev_info *revs)
{
struct commitinfo *info;
int columns = revs->graph ? 4 : 3;
struct strbuf graphbuf = STRBUF_INIT;
struct strbuf msgbuf = STRBUF_INIT;
if (ctx.repo->enable_log_filecount)
columns++;
if (ctx.repo->enable_log_linecount)
columns++;
if (revs->graph) {
/* Advance graph until current commit */
while (!graph_next_line(revs->graph, &graphbuf)) {
/* Print graph segment in otherwise empty table row */
html("<tr class='nohover'><td class='commitgraph'>");
html(graphbuf.buf);
htmlf("</td><td colspan='%d' /></tr>\n", columns);
strbuf_setlen(&graphbuf, 0);
}
/* Current commit's graph segment is now ready in graphbuf */
}
info = cgit_parse_commit(commit);
htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");
if (revs->graph) {
/* Print graph segment for current commit */
html("<td class='commitgraph'>");
html(graphbuf.buf);
html("</td>");
strbuf_setlen(&graphbuf, 0);
}
else {
html("<td>");
cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
html("</td>");
}
htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
if (ctx.qry.showmsg) {
/* line-wrap long commit subjects instead of truncating them */
size_t subject_len = strlen(info->subject);
if (subject_len > ctx.cfg.max_msg_len &&
ctx.cfg.max_msg_len >= 15) {
/* symbol for signaling line-wrap (in PAGE_ENCODING) */
const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };
int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
/* Rewind i to preceding space character */
while (i > 0 && !isspace(info->subject[i]))
--i;
if (!i) /* Oops, zero spaces. Reset i */
i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
/* add remainder starting at i to msgbuf */
strbuf_add(&msgbuf, info->subject + i, subject_len - i);
strbuf_trim(&msgbuf);
strbuf_add(&msgbuf, "\n\n", 2);
/* Place wrap_symbol at position i in info->subject */
strcpy(info->subject + i, wrap_symbol);
}
}
cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
sha1_to_hex(commit->object.sha1), ctx.qry.vpath, 0);
show_commit_decorations(commit);
html("</td><td>");
html_txt(info->author);
if (revs->graph) {
html("</td><td>");
cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
}
if (ctx.repo->enable_log_filecount || ctx.repo->enable_log_linecount) {
files = 0;
add_lines = 0;
rem_lines = 0;
cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
}
if (ctx.repo->enable_log_filecount)
htmlf("</td><td>%d", files);
if (ctx.repo->enable_log_linecount)
htmlf("</td><td>-%d/+%d", rem_lines, add_lines);
html("</td></tr>\n");
if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */
html("<tr class='nohover'>");
if (ctx.qry.showmsg) {
/* Concatenate commit message + notes in msgbuf */
if (info->msg && *(info->msg)) {
strbuf_addstr(&msgbuf, info->msg);
strbuf_addch(&msgbuf, '\n');
}
format_display_notes(commit->object.sha1,
&msgbuf, PAGE_ENCODING, 0);
strbuf_addch(&msgbuf, '\n');
strbuf_ltrim(&msgbuf);
}
if (revs->graph) {
int lines = 0;
/* Calculate graph padding */
if (ctx.qry.showmsg) {
/* Count #lines in commit message + notes */
const char *p = msgbuf.buf;
lines = 1;
while ((p = strchr(p, '\n'))) {
p++;
lines++;
}
}
/* Print graph padding */
html("<td class='commitgraph'>");
while (lines > 0 || !graph_is_commit_finished(revs->graph)) {
if (graphbuf.len)
html("\n");
strbuf_setlen(&graphbuf, 0);
graph_next_line(revs->graph, &graphbuf);
html(graphbuf.buf);
lines--;
}
html("</td>\n");
}
else
html("<td/>"); /* Empty 'Age' column */
/* Print msgbuf into remainder of table row */
htmlf("<td colspan='%d'%s>\n", columns - (revs->graph ? 1 : 0),
ctx.qry.showmsg ? " class='logmsg'" : "");
html_txt(msgbuf.buf);
html("</td></tr>\n");
}
strbuf_release(&msgbuf);
strbuf_release(&graphbuf);
cgit_free_commitinfo(info);
}
static const char *disambiguate_ref(const char *ref, int *must_free_result)
{
unsigned char sha1[20];
struct strbuf longref = STRBUF_INIT;
strbuf_addf(&longref, "refs/heads/%s", ref);
if (get_sha1(longref.buf, sha1) == 0) {
*must_free_result = 1;
return strbuf_detach(&longref, NULL);
}
*must_free_result = 0;
strbuf_release(&longref);
return ref;
}
static char *next_token(char **src)
{
char *result;
if (!src || !*src)
return NULL;
while (isspace(**src))
(*src)++;
if (!**src)
return NULL;
result = *src;
while (**src) {
if (isspace(**src)) {
**src = '\0';
(*src)++;
break;
}
(*src)++;
}
return result;
}
void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
char *path, int pager, int commit_graph, int commit_sort)
{
struct rev_info rev;
struct commit *commit;
struct vector vec = VECTOR_INIT(char *);
int i, columns = commit_graph ? 4 : 3;
int must_free_tip = 0;
struct strbuf argbuf = STRBUF_INIT;
/* First argv is NULL */
vector_push(&vec, NULL, 0);
if (!tip)
tip = ctx.qry.head;
tip = disambiguate_ref(tip, &must_free_tip);
vector_push(&vec, &tip, 0);
if (grep && pattern && *pattern) {
pattern = xstrdup(pattern);
if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
!strcmp(grep, "committer")) {
strbuf_addf(&argbuf, "--%s=%s", grep, pattern);
vector_push(&vec, &argbuf.buf, 0);
}
if (!strcmp(grep, "range")) {
char *arg;
/* Split the pattern at whitespace and add each token
* as a revision expression. Do not accept other
* rev-list options. Also, replace the previously
* pushed tip (it's no longer relevant).
*/
vec.count--;
while ((arg = next_token(&pattern))) {
if (*arg == '-') {
fprintf(stderr, "Bad range expr: %s\n",
arg);
break;
}
vector_push(&vec, &arg, 0);
}
}
}
if (commit_graph) {
static const char *graph_arg = "--graph";
static const char *color_arg = "--color";
vector_push(&vec, &graph_arg, 0);
vector_push(&vec, &color_arg, 0);
graph_set_column_colors(column_colors_html,
COLUMN_COLORS_HTML_MAX);
}
if (commit_sort == 1) {
static const char *date_order_arg = "--date-order";
vector_push(&vec, &date_order_arg, 0);
} else if (commit_sort == 2) {
static const char *topo_order_arg = "--topo-order";
vector_push(&vec, &topo_order_arg, 0);
}
if (path) {
static const char *double_dash_arg = "--";
vector_push(&vec, &double_dash_arg, 0);
vector_push(&vec, &path, 0);
}
/* Make sure the vector is NULL-terminated */
vector_push(&vec, NULL, 0);
vec.count--;
init_revisions(&rev, NULL);
rev.abbrev = DEFAULT_ABBREV;
rev.commit_format = CMIT_FMT_DEFAULT;
rev.verbose_header = 1;
rev.show_root_diff = 0;
setup_revisions(vec.count, vec.data, &rev, NULL);
load_ref_decorations(DECORATE_FULL_REFS);
rev.show_decorations = 1;
rev.grep_filter.regflags |= REG_ICASE;
compile_grep_patterns(&rev.grep_filter);
prepare_revision_walk(&rev);
if (pager)
html("<table class='list nowrap'>");
html("<tr class='nohover'>");
if (commit_graph)
html("<th></th>");
else
html("<th class='left'>Age</th>");
html("<th class='left'>Commit message");
if (pager) {
html(" (");
cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
NULL, ctx.qry.head, ctx.qry.sha1,
ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
ctx.qry.search, ctx.qry.showmsg ? 0 : 1);
html(")");
}
html("</th><th class='left'>Author</th>");
if (commit_graph)
html("<th class='left'>Age</th>");
if (ctx.repo->enable_log_filecount) {
html("<th class='left'>Files</th>");
columns++;
}
if (ctx.repo->enable_log_linecount) {
html("<th class='left'>Lines</th>");
columns++;
}
html("</tr>\n");
if (ofs<0)
ofs = 0;
for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {
free(commit->buffer);
commit->buffer = NULL;
free_commit_list(commit->parents);
commit->parents = NULL;
}
for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
print_commit(commit, &rev);
free(commit->buffer);
commit->buffer = NULL;
free_commit_list(commit->parents);
commit->parents = NULL;
}
if (pager) {
html("</table><ul class='pager'>");
if (ofs > 0) {
html("<li>");
cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
ctx.qry.sha1, ctx.qry.vpath,
ofs - cnt, ctx.qry.grep,
ctx.qry.search, ctx.qry.showmsg);
html("</li>");
}
if ((commit = get_revision(&rev)) != NULL) {
html("<li>");
cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
ctx.qry.sha1, ctx.qry.vpath,
ofs + cnt, ctx.qry.grep,
ctx.qry.search, ctx.qry.showmsg);
html("</li>");
}
html("</ul>");
} else if ((commit = get_revision(&rev)) != NULL) {
htmlf("<tr class='nohover'><td colspan='%d'>", columns);
cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg);
html("</td></tr>\n");
}
/* If we allocated tip then it is safe to cast away const. */
if (must_free_tip)
free((char*) tip);
strbuf_release(&argbuf);
}