git-multimail: update to release 1.2.0
[git.git] / prompt.c
blob75406390c6fdabf74e74d4c2a90e6ac92afc4ccc
1 #include "cache.h"
2 #include "run-command.h"
3 #include "strbuf.h"
4 #include "prompt.h"
5 #include "compat/terminal.h"
7 static char *do_askpass(const char *cmd, const char *prompt)
9 struct child_process pass = CHILD_PROCESS_INIT;
10 const char *args[3];
11 static struct strbuf buffer = STRBUF_INIT;
12 int err = 0;
14 args[0] = cmd;
15 args[1] = prompt;
16 args[2] = NULL;
18 pass.argv = args;
19 pass.out = -1;
21 if (start_command(&pass))
22 return NULL;
24 strbuf_reset(&buffer);
25 if (strbuf_read(&buffer, pass.out, 20) < 0)
26 err = 1;
28 close(pass.out);
30 if (finish_command(&pass))
31 err = 1;
33 if (err) {
34 error("unable to read askpass response from '%s'", cmd);
35 strbuf_release(&buffer);
36 return NULL;
39 strbuf_setlen(&buffer, strcspn(buffer.buf, "\r\n"));
41 return buffer.buf;
44 char *git_prompt(const char *prompt, int flags)
46 char *r = NULL;
48 if (flags & PROMPT_ASKPASS) {
49 const char *askpass;
51 askpass = getenv("GIT_ASKPASS");
52 if (!askpass)
53 askpass = askpass_program;
54 if (!askpass)
55 askpass = getenv("SSH_ASKPASS");
56 if (askpass && *askpass)
57 r = do_askpass(askpass, prompt);
60 if (!r) {
61 const char *err;
63 if (git_env_bool("GIT_TERMINAL_PROMPT", 1)) {
64 r = git_terminal_prompt(prompt, flags & PROMPT_ECHO);
65 err = strerror(errno);
66 } else {
67 err = "terminal prompts disabled";
69 if (!r) {
70 /* prompts already contain ": " at the end */
71 die("could not read %s%s", prompt, err);
74 return r;