From d6f6072560c963065b13c704fa1fa6f8950e4bac Mon Sep 17 00:00:00 2001 From: Lars Hjemli Date: Fri, 31 Jul 2009 17:38:38 +0200 Subject: Add generic filter/plugin infrastructure The functions cgit_open_filter() and cgit_close_filter() can be used to execute filters on the output stream from cgit. Signed-off-by: Lars Hjemli --- cgit.c | 15 +++++++++++++++ cgit.h | 12 ++++++++++++ shared.c | 35 +++++++++++++++++++++++++++++++++++ 3 files changed, 62 insertions(+) diff --git a/cgit.c b/cgit.c index 2039ab1..779a464 100644 --- a/cgit.c +++ b/cgit.c @@ -17,6 +17,21 @@ const char *cgit_version = CGIT_VERSION; +struct cgit_filter *new_filter(const char *cmd, int extra_args) +{ + struct cgit_filter *f; + + if (!cmd) + return NULL; + + f = xmalloc(sizeof(struct cgit_filter)); + f->cmd = xstrdup(cmd); + f->argv = xmalloc((2 + extra_args) * sizeof(char *)); + f->argv[0] = f->cmd; + f->argv[1] = NULL; + return f; +} + void config_cb(const char *name, const char *value) { if (!strcmp(name, "root-title")) diff --git a/cgit.h b/cgit.h index 8c64efe..d0fff1f 100644 --- a/cgit.h +++ b/cgit.h @@ -129,6 +129,15 @@ struct cgit_query { int showmsg; }; +struct cgit_filter { + char *cmd; + char **argv; + int old_stdout; + int pipe_fh[2]; + int pid; + int exitstatus; +}; + struct cgit_config { char *agefile; char *cache_root; @@ -248,5 +257,8 @@ extern const char *cgit_repobasename(const char *reponame); extern int cgit_parse_snapshots_mask(const char *str); +extern int cgit_open_filter(struct cgit_filter *filter); +extern int cgit_close_filter(struct cgit_filter *filter); + #endif /* CGIT_H */ diff --git a/shared.c b/shared.c index cce0af4..288cfa2 100644 --- a/shared.c +++ b/shared.c @@ -355,3 +355,38 @@ int cgit_parse_snapshots_mask(const char *str) } return rv; } + +int cgit_open_filter(struct cgit_filter *filter) +{ + + filter->old_stdout = chk_positive(dup(STDOUT_FILENO), + "Unable to duplicate STDOUT"); + chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess"); + filter->pid = chk_non_negative(fork(), "Unable to create subprocess"); + if (filter->pid == 0) { + close(filter->pipe_fh[1]); + chk_non_negative(dup2(filter->pipe_fh[0], STDIN_FILENO), + "Unable to use pipe as STDIN"); + execvp(filter->cmd, filter->argv); + die("Unable to exec subprocess %s: %s (%d)", filter->cmd, + strerror(errno), errno); + } + close(filter->pipe_fh[0]); + chk_non_negative(dup2(filter->pipe_fh[1], STDOUT_FILENO), + "Unable to use pipe as STDOUT"); + close(filter->pipe_fh[1]); + return 0; +} + +int cgit_close_filter(struct cgit_filter *filter) +{ + chk_non_negative(dup2(filter->old_stdout, STDOUT_FILENO), + "Unable to restore STDOUT"); + close(filter->old_stdout); + if (filter->pid < 0) + return 0; + waitpid(filter->pid, &filter->exitstatus, 0); + if (WIFEXITED(filter->exitstatus) && !WEXITSTATUS(filter->exitstatus)) + return 0; + die("Subprocess %s exited abnormally", filter->cmd); +} -- cgit v1.2.3-2-gb3c3 From 18dfbdc099c1398016427b6fa7f1a1facb363998 Mon Sep 17 00:00:00 2001 From: Lars Hjemli Date: Fri, 31 Jul 2009 15:52:57 +0200 Subject: ui-snapshot: use cgit_{open|close}_filter() to execute compressors This simplifies the code in ui-snapshot.c and makes the test-suite verify the new filter-functions. Signed-off-by: Lars Hjemli --- ui-snapshot.c | 35 +++++++---------------------------- 1 file changed, 7 insertions(+), 28 deletions(-) diff --git a/ui-snapshot.c b/ui-snapshot.c index 5372f5d..4136b3e 100644 --- a/ui-snapshot.c +++ b/ui-snapshot.c @@ -12,37 +12,16 @@ static int write_compressed_tar_archive(struct archiver_args *args,const char *filter) { - int rw[2]; - pid_t gzpid; - int stdout2; - int status; int rv; + struct cgit_filter f; - stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing"); - chk_zero(pipe(rw), "Opening pipe from compressor subprocess"); - gzpid = chk_non_negative(fork(), "Forking compressor subprocess"); - if(gzpid==0) { - /* child */ - chk_zero(close(rw[1]), "Closing write end of pipe in child"); - chk_zero(close(STDIN_FILENO), "Closing STDIN"); - chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin"); - execlp(filter,filter,NULL); - _exit(-1); - } - /* parent */ - chk_zero(close(rw[0]), "Closing read end of pipe"); - chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor"); - + f.cmd = xstrdup(filter); + f.argv = malloc(2 * sizeof(char *)); + f.argv[0] = f.cmd; + f.argv[1] = NULL; + cgit_open_filter(&f); rv = write_tar_archive(args); - - chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor"); - chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT"); - chk_zero(close(stdout2), "Closing uncompressed STDOUT"); - chk_zero(close(rw[1]), "Closing write end of pipe in parent"); - chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process"); - if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) ) - cgit_print_error("Failed to compress archive"); - + cgit_close_filter(&f); return rv; } -- cgit v1.2.3-2-gb3c3 From 46b7abed99e957008c01c02cf612aa526ba92f04 Mon Sep 17 00:00:00 2001 From: Lars Hjemli Date: Fri, 31 Jul 2009 16:55:27 +0200 Subject: ui-tree: add support for source-filter option This new option is used to specify an external command which will be executed when displaying blob content in the tree view. Blob content will be written to STDIN of the filter and STDOUT from the filter will be included verbatim in the html output from cgit. The file name of the blob will be passed as the only argument to the filter command. Signed-off-by: Lars Hjemli --- cgit.c | 2 ++ cgit.h | 1 + cgitrc.5.txt | 8 ++++++++ ui-tree.c | 18 ++++++++++++++---- 4 files changed, 25 insertions(+), 4 deletions(-) diff --git a/cgit.c b/cgit.c index 779a464..eb7b45d 100644 --- a/cgit.c +++ b/cgit.c @@ -100,6 +100,8 @@ void config_cb(const char *name, const char *value) ctx.cfg.max_repo_count = atoi(value); else if (!strcmp(name, "max-commit-count")) ctx.cfg.max_commit_count = atoi(value); + else if (!strcmp(name, "source-filter")) + ctx.cfg.source_filter = new_filter(value, 1); else if (!strcmp(name, "summary-log")) ctx.cfg.summary_log = atoi(value); else if (!strcmp(name, "summary-branches")) diff --git a/cgit.h b/cgit.h index d0fff1f..f9cf0df 100644 --- a/cgit.h +++ b/cgit.h @@ -183,6 +183,7 @@ struct cgit_config { int summary_branches; int summary_log; int summary_tags; + struct cgit_filter *source_filter; }; struct cgit_page { diff --git a/cgitrc.5.txt b/cgitrc.5.txt index a207fe0..d420ad4 100644 --- a/cgitrc.5.txt +++ b/cgitrc.5.txt @@ -198,6 +198,14 @@ snapshots:: "zip" zip-file Default value: none. +source-filter:: + Specifies a command which will be invoked to format plaintext blobs + in the tree view. The command will get the blob content on its STDIN + and the name of the blob as its only command line argument. The STDOUT + from the command will be included verbatim as the blob contents, i.e. + this can be used to implement e.g. syntax highlighting. Default value: + none. + summary-branches:: Specifies the number of branches to display in the repository "summary" view. Default value: "10". diff --git a/ui-tree.c b/ui-tree.c index 553dbaa..816e121 100644 --- a/ui-tree.c +++ b/ui-tree.c @@ -15,13 +15,23 @@ char *curr_rev; char *match_path; int header = 0; -static void print_text_buffer(char *buf, unsigned long size) +static void print_text_buffer(const char *name, char *buf, unsigned long size) { unsigned long lineno, idx; const char *numberfmt = "%1$d\n"; html("\n"); + if (ctx.cfg.source_filter) { + html("
");
+		ctx.cfg.source_filter->argv[1] = xstrdup(name);
+		cgit_open_filter(ctx.cfg.source_filter);
+		write(STDOUT_FILENO, buf, size);
+		cgit_close_filter(ctx.cfg.source_filter);
+		html("
\n"); + return; + } + html("
");
 	idx = 0;
 	lineno = 0;
@@ -65,7 +75,7 @@ static void print_binary_buffer(char *buf, unsigned long size)
 	html("\n");
 }
 
-static void print_object(const unsigned char *sha1, char *path)
+static void print_object(const unsigned char *sha1, char *path, const char *basename)
 {
 	enum object_type type;
 	char *buf;
@@ -93,7 +103,7 @@ static void print_object(const unsigned char *sha1, char *path)
 	if (buffer_is_binary(buf, size))
 		print_binary_buffer(buf, size);
 	else
-		print_text_buffer(buf, size);
+		print_text_buffer(basename, buf, size);
 }
 
 
@@ -213,7 +223,7 @@ static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 			ls_head();
 			return READ_TREE_RECURSIVE;
 		} else {
-			print_object(sha1, buffer);
+			print_object(sha1, buffer, pathname);
 			return 0;
 		}
 	}
-- 
cgit v1.2.3-2-gb3c3


From f35db1cd2b75aac6952aa07713e44ca01fd89727 Mon Sep 17 00:00:00 2001
From: Lars Hjemli
Date: Fri, 31 Jul 2009 17:42:57 +0200
Subject: ui-commit: add support for 'commit-filter' option

This new option specifies a filter which is executed on the commit
message, i.e. the commit message is written to the filters STDIN and
the filters STDOUT is included verbatim as the commit message.

This can be used to implement commit linking by creating a simple
shell script in e.g. /usr/bin/cgit-commit-filter.sh like this:

#/bin/sh
sed -re 's|\b([0-9a-fA-F]{6,40})\b|\1|g'

Signed-off-by: Lars Hjemli 
---
 cgit.c       | 2 ++
 cgit.h       | 1 +
 cgitrc.5.txt | 6 ++++++
 ui-commit.c  | 8 ++++++++
 4 files changed, 17 insertions(+)

diff --git a/cgit.c b/cgit.c
index eb7b45d..2cda554 100644
--- a/cgit.c
+++ b/cgit.c
@@ -90,6 +90,8 @@ void config_cb(const char *name, const char *value)
 		ctx.cfg.cache_static_ttl = atoi(value);
 	else if (!strcmp(name, "cache-dynamic-ttl"))
 		ctx.cfg.cache_dynamic_ttl = atoi(value);
+	else if (!strcmp(name, "commit-filter"))
+		ctx.cfg.commit_filter = new_filter(value, 0);
 	else if (!strcmp(name, "embedded"))
 		ctx.cfg.embedded = atoi(value);
 	else if (!strcmp(name, "max-message-length"))
diff --git a/cgit.h b/cgit.h
index f9cf0df..438301d 100644
--- a/cgit.h
+++ b/cgit.h
@@ -183,6 +183,7 @@ struct cgit_config {
 	int summary_branches;
 	int summary_log;
 	int summary_tags;
+	struct cgit_filter *commit_filter;
 	struct cgit_filter *source_filter;
 };
 
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index d420ad4..2efd6aa 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -55,6 +55,12 @@ clone-prefix::
 	setting is only used if `repo.clone-url` is unspecified. Default value:
 	none.
 
+commit-filter::
+	Specifies a command which will be invoked to format commit messages.
+	The command will get the message on its STDIN, and the STDOUT from the
+	command will be included verbatim as the commit message, i.e. this can
+	be used to implement bugtracker integration. Default value: none.
+
 css::
 	Url which specifies the css document to include in all cgit pages.
 	Default value: "/cgit.css".
diff --git a/ui-commit.c b/ui-commit.c
index 41ce70e..ee0e139 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -89,11 +89,19 @@ void cgit_print_commit(char *hex)
 	}
 	html("\n");
 	html("
");
+	if (ctx.cfg.commit_filter)
+		cgit_open_filter(ctx.cfg.commit_filter);
 	html_txt(info->subject);
+	if (ctx.cfg.commit_filter)
+		cgit_close_filter(ctx.cfg.commit_filter);
 	show_commit_decorations(commit);
 	html("
");
 	html("
");
+	if (ctx.cfg.commit_filter)
+		cgit_open_filter(ctx.cfg.commit_filter);
 	html_txt(info->msg);
+	if (ctx.cfg.commit_filter)
+		cgit_close_filter(ctx.cfg.commit_filter);
 	html("
");
 	if (parents < 3) {
 		if (parents)
-- 
cgit v1.2.3-2-gb3c3


From e976df27952ca1e450c1c3d420532ac9f5e3036b Mon Sep 17 00:00:00 2001
From: Lars Hjemli
Date: Sun, 9 Aug 2009 13:22:00 +0200
Subject: Add support for repo.commit-filter and repo.source-filter

These options can be used to override the default commit- and source-
filter settings per repository.

Signed-off-by: Lars Hjemli 
---
 cgit.c       |  4 ++++
 cgit.h       | 20 +++++++++++---------
 cgitrc.5.txt |  6 ++++++
 shared.c     |  2 ++
 ui-commit.c  | 16 ++++++++--------
 ui-tree.c    |  8 ++++----
 6 files changed, 35 insertions(+), 21 deletions(-)

diff --git a/cgit.c b/cgit.c
index 2cda554..fd341b8 100644
--- a/cgit.c
+++ b/cgit.c
@@ -146,6 +146,10 @@ void config_cb(const char *name, const char *value)
 		ctx.repo->max_stats = cgit_find_stats_period(value, NULL);
 	else if (ctx.repo && !strcmp(name, "repo.module-link"))
 		ctx.repo->module_link= xstrdup(value);
+	else if (ctx.repo && !strcmp(name, "repo.commit-filter"))
+		ctx.repo->commit_filter = new_filter(value, 0);
+	else if (ctx.repo && !strcmp(name, "repo.source-filter"))
+		ctx.repo->source_filter = new_filter(value, 1);
 	else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
 		if (*value == '/')
 			ctx.repo->readme = xstrdup(value);
diff --git a/cgit.h b/cgit.h
index 438301d..f10ba05 100644
--- a/cgit.h
+++ b/cgit.h
@@ -48,6 +48,15 @@ typedef void (*configfn)(const char *name, const char *value);
 typedef void (*filepair_fn)(struct diff_filepair *pair);
 typedef void (*linediff_fn)(char *line, int len);
 
+struct cgit_filter {
+	char *cmd;
+	char **argv;
+	int old_stdout;
+	int pipe_fh[2];
+	int pid;
+	int exitstatus;
+};
+
 struct cgit_repo {
 	char *url;
 	char *name;
@@ -64,6 +73,8 @@ struct cgit_repo {
 	int enable_log_linecount;
 	int max_stats;
 	time_t mtime;
+	struct cgit_filter *commit_filter;
+	struct cgit_filter *source_filter;
 };
 
 struct cgit_repolist {
@@ -129,15 +140,6 @@ struct cgit_query {
 	int showmsg;
 };
 
-struct cgit_filter {
-	char *cmd;
-	char **argv;
-	int old_stdout;
-	int pipe_fh[2];
-	int pid;
-	int exitstatus;
-};
-
 struct cgit_config {
 	char *agefile;
 	char *cache_root;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index 2efd6aa..ffb3e0f 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -238,6 +238,9 @@ repo.clone-url::
 	A list of space-separated urls which can be used to clone this repo.
 	Default value: none.
 
+repo.commit-filter::
+	Override the default commit-filter. Default value: .
+
 repo.defbranch::
 	The name of the default branch for this repository. If no such branch
 	exists in the repository, the first branch name (when sorted) is used
@@ -278,6 +281,9 @@ repo.snapshots::
 	A mask of allowed snapshot-formats for this repo, restricted by the
 	"snapshots" global setting. Default value: .
 
+repo.source-filter::
+	Override the default source-filter. Default value: .
+
 repo.url::
 	The relative url used to access the repository. This must be the first
 	setting specified for each repo. Default value: none.
diff --git a/shared.c b/shared.c
index 288cfa2..783604b 100644
--- a/shared.c
+++ b/shared.c
@@ -62,6 +62,8 @@ struct cgit_repo *cgit_add_repo(const char *url)
 	ret->module_link = ctx.cfg.module_link;
 	ret->readme = NULL;
 	ret->mtime = -1;
+	ret->commit_filter = ctx.cfg.commit_filter;
+	ret->source_filter = ctx.cfg.source_filter;
 	return ret;
 }
 
diff --git a/ui-commit.c b/ui-commit.c
index ee0e139..5815b58 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -89,19 +89,19 @@ void cgit_print_commit(char *hex)
 	}
 	html("\n");
 	html("
");
-	if (ctx.cfg.commit_filter)
-		cgit_open_filter(ctx.cfg.commit_filter);
+	if (ctx.repo->commit_filter)
+		cgit_open_filter(ctx.repo->commit_filter);
 	html_txt(info->subject);
-	if (ctx.cfg.commit_filter)
-		cgit_close_filter(ctx.cfg.commit_filter);
+	if (ctx.repo->commit_filter)
+		cgit_close_filter(ctx.repo->commit_filter);
 	show_commit_decorations(commit);
 	html("
");
 	html("
");
-	if (ctx.cfg.commit_filter)
-		cgit_open_filter(ctx.cfg.commit_filter);
+	if (ctx.repo->commit_filter)
+		cgit_open_filter(ctx.repo->commit_filter);
 	html_txt(info->msg);
-	if (ctx.cfg.commit_filter)
-		cgit_close_filter(ctx.cfg.commit_filter);
+	if (ctx.repo->commit_filter)
+		cgit_close_filter(ctx.repo->commit_filter);
 	html("
");
 	if (parents < 3) {
 		if (parents)
diff --git a/ui-tree.c b/ui-tree.c
index 816e121..caf6a9e 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -22,12 +22,12 @@ static void print_text_buffer(const char *name, char *buf, unsigned long size)
 		"%1$d\n";
 
 	html("\n");
-	if (ctx.cfg.source_filter) {
+	if (ctx.repo->source_filter) {
 		html("
");
-		ctx.cfg.source_filter->argv[1] = xstrdup(name);
-		cgit_open_filter(ctx.cfg.source_filter);
+		ctx.repo->source_filter->argv[1] = xstrdup(name);
+		cgit_open_filter(ctx.repo->source_filter);
 		write(STDOUT_FILENO, buf, size);
-		cgit_close_filter(ctx.cfg.source_filter);
+		cgit_close_filter(ctx.repo->source_filter);
 		html("
\n");
 		return;
 	}
-- 
cgit v1.2.3-2-gb3c3


From 97b3d252629a8a3b9d356c2532dec7611438e4b9 Mon Sep 17 00:00:00 2001
From: Lars Hjemli
Date: Sun, 9 Aug 2009 13:39:44 +0200
Subject: cgit.c: allow repo.*-filter options to unset the current default

If e.g. repo.commit-filter is specified as an empty string, this
is now properly handled as disabling the global commit-filter setting
for the current repository.

Signed-off-by: Lars Hjemli 
---
 cgit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cgit.c b/cgit.c
index fd341b8..b3a98c1 100644
--- a/cgit.c
+++ b/cgit.c
@@ -21,7 +21,7 @@ struct cgit_filter *new_filter(const char *cmd, int extra_args)
 {
 	struct cgit_filter *f;
 
-	if (!cmd)
+	if (!cmd || !cmd[0])
 		return NULL;
 
 	f = xmalloc(sizeof(struct cgit_filter));
-- 
cgit v1.2.3-2-gb3c3