config: remove git_config_iter
[git/git.git] / prompt.c
CommitLineData
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1#include "cache.h"
2#include "run-command.h"
3#include "strbuf.h"
4#include "prompt.h"
a5090259 5#include "compat/terminal.h"
d3c58b83 6
1cb0134f 7static char *do_askpass(const char *cmd, const char *prompt)
d3c58b83 8{
d3180279 9 struct child_process pass = CHILD_PROCESS_INIT;
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10 const char *args[3];
11 static struct strbuf buffer = STRBUF_INIT;
84d72733 12 int err = 0;
d3c58b83 13
1cb0134f 14 args[0] = cmd;
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15 args[1] = prompt;
16 args[2] = NULL;
17
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18 pass.argv = args;
19 pass.out = -1;
20
21 if (start_command(&pass))
84d72733 22 return NULL;
d3c58b83 23
e1c1a324 24 strbuf_reset(&buffer);
d3c58b83 25 if (strbuf_read(&buffer, pass.out, 20) < 0)
84d72733 26 err = 1;
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27
28 close(pass.out);
29
30 if (finish_command(&pass))
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31 err = 1;
32
33 if (err) {
34 error("unable to read askpass response from '%s'", cmd);
35 strbuf_release(&buffer);
36 return NULL;
37 }
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38
39 strbuf_setlen(&buffer, strcspn(buffer.buf, "\r\n"));
40
e1c1a324 41 return buffer.buf;
d3c58b83 42}
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43
44char *git_prompt(const char *prompt, int flags)
45{
84d72733 46 char *r = NULL;
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47
48 if (flags & PROMPT_ASKPASS) {
49 const char *askpass;
50
51 askpass = getenv("GIT_ASKPASS");
52 if (!askpass)
53 askpass = askpass_program;
54 if (!askpass)
55 askpass = getenv("SSH_ASKPASS");
56 if (askpass && *askpass)
84d72733 57 r = do_askpass(askpass, prompt);
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58 }
59
84d72733 60 if (!r) {
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61 const char *err;
62
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";
68 }
69 if (!r) {
70 /* prompts already contain ": " at the end */
71 die("could not read %s%s", prompt, err);
72 }
84d72733 73 }
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74 return r;
75}