From 94d6e5d851dd72466ab6c7447391b0237040818b Mon Sep 17 00:00:00 2001 From: "Lubomir I. Ivanov" Date: Sun, 8 Jul 2018 00:26:24 +0300 Subject: save-git: allocate user_info members on the heap subsurface_user_info() only works on Linux (linux.c), but it doesn't allocate values on the heap. Solve this ownership problem by always allocating .name and .email on the heap in subsurface_user_info() and freeing in the caller. If subsurface_user_info() did not modify any of the values from NULL, use default ones, but allocate them on the heap too. Ref #1346 Signed-off-by: Lubomir I. Ivanov --- core/dive.h | 4 ++-- core/linux.c | 5 ++--- core/save-git.c | 17 ++++++++++------- 3 files changed, 14 insertions(+), 12 deletions(-) (limited to 'core') diff --git a/core/dive.h b/core/dive.h index 1ce180238..1e694e271 100644 --- a/core/dive.h +++ b/core/dive.h @@ -712,8 +712,8 @@ int cylinderuse_from_text(const char *text); struct user_info { - const char *name; - const char *email; + char *name; + char *email; }; extern void subsurface_user_info(struct user_info *); diff --git a/core/linux.c b/core/linux.c index b8d88e9e5..07d178cb0 100644 --- a/core/linux.c +++ b/core/linux.c @@ -39,7 +39,7 @@ void subsurface_user_info(struct user_info *user) if (pwd) { if (!empty_string(pwd->pw_gecos)) - user->name = pwd->pw_gecos; + user->name = strdup(pwd->pw_gecos); if (!username) username = pwd->pw_name; } @@ -48,8 +48,7 @@ void subsurface_user_info(struct user_info *user) struct membuffer mb = {}; gethostname(hostname, sizeof(hostname)); put_format(&mb, "%s@%s", username, hostname); - user->email = mb_cstring(&mb); - free_buffer(&mb); + user->email = mb_cstring(&mb); // 'email' is heap allocated } } diff --git a/core/save-git.c b/core/save-git.c index 3780399a0..8e5891969 100644 --- a/core/save-git.c +++ b/core/save-git.c @@ -1054,16 +1054,19 @@ static int get_authorship(git_repository *repo, git_signature **authorp) if (git_signature_default(authorp, repo) == 0) return 0; #endif - /* Default name information, with potential OS overrides */ - struct user_info user = { - .name = "Subsurface", - .email = "subsurface-app-account@subsurface-divelog.org" - }; - + /* try to fetch the user info from the OS, otherwise use default values. */ + struct user_info user = { .name = NULL, .email = NULL }; subsurface_user_info(&user); + if (!user.name) + user.name = strdup("Subsurface"); + if (!user.email) + user.email = strdup("subsurface-app-account@subsurface-divelog.org"); /* git_signature_default() is too recent */ - return git_signature_now(authorp, user.name, user.email); + int ret = git_signature_now(authorp, user.name, user.email); + free((void *)user.name); + free((void *)user.email); + return ret; } static void create_commit_message(struct membuffer *msg, bool create_empty) -- cgit v1.2.3-70-g09d2