prompt.c

   1 #include "cache.h"
   2 #include "run-command.h"
   3 #include "strbuf.h"
   4 #include "prompt.h"
   5 #include "compat/terminal.h"
   6
   7 static char *do_askpass(const char *cmd, const char *prompt)
   8 {
   9         struct child_process pass;
  10         const char *args[3];
  11         static struct strbuf buffer = STRBUF_INIT;
  12
  13         args[0] = cmd;
  14         args[1] = prompt;
  15         args[2] = NULL;
  16
  17         memset(&pass, 0, sizeof(pass));
  18         pass.argv = args;
  19         pass.out = -1;
  20
  21         if (start_command(&pass))
  22                 exit(1);
  23
  24         strbuf_reset(&buffer);
  25         if (strbuf_read(&buffer, pass.out, 20) < 0)
  26                 die("failed to get '%s' from %s\n", prompt, cmd);
  27
  28         close(pass.out);
  29
  30         if (finish_command(&pass))
  31                 exit(1);
  32
  33         strbuf_setlen(&buffer, strcspn(buffer.buf, "\r\n"));
  34
  35         return buffer.buf;
  36 }
  37
  38 char *git_prompt(const char *prompt, int flags)
  39 {
  40         char *r;
  41
  42         if (flags & PROMPT_ASKPASS) {
  43                 const char *askpass;
  44
  45                 askpass = getenv("GIT_ASKPASS");
  46                 if (!askpass)
  47                         askpass = askpass_program;
  48                 if (!askpass)
  49                         askpass = getenv("SSH_ASKPASS");
  50                 if (askpass && *askpass)
  51                         return do_askpass(askpass, prompt);
  52         }
  53
  54         r = git_terminal_prompt(prompt, flags & PROMPT_ECHO);
  55         if (!r)
  56                 die_errno("could not read '%s'", prompt);
  57         return r;
  58 }
  59
  60 char *git_getpass(const char *prompt)
  61 {
  62         return git_prompt(prompt, PROMPT_ASKPASS);
  63 }