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81 lines
1.2 KiB
81 lines
1.2 KiB
#define _POSIX_C_SOURCE 200809l
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <pwd.h>
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#include "config.h"
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#include "fstr.h"
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fstr_t PS1 = {0};
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unsigned int histsize = DEF_HISTSIZE;
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// Buffered user data
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struct {
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char *name;
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char *home;
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uid_t uid;
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gid_t gid;
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} uinfo = {0};
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struct {
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// $ or #
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char tag;
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} shinfo;
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void sh_update_uinfo(void);
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void sh_update_shinfo(void);
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void sh_update_ps1(void);
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inline void sh_print_ps1(void);
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int main(int argc, char **argv)
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{
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(void)argc;
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(void)argv;
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for (;;) {
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sh_update_uinfo();
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sh_update_shinfo();
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sh_update_ps1();
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sh_print_ps1();
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for(;;);
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}
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return EXIT_SUCCESS;
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}
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void sh_fill_uinfo(void)
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{
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struct passwd *pw;
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uid_t nuid;
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nuid = getuid();
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if (nuid == uinfo.uid && uinfo.name)
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return;
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uinfo.uid = nuid;
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pw = getpwuid(uinfo.uid);
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// User not found
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if (!pw)
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exit(EXIT_FAILURE);
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uinfo.gid = pw->pw_gid;
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uinfo.name = estrdup(pw->pw_name);
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uinfo.home = estrdup(pw->pw_dir);
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}
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void sh_update_shinfo(void)
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{
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shinfo.tag = uinfo.uid ? '$' : '#';
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}
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inline void sh_print_ps1(void)
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{
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puts(PS1.s);
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}
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void sh_update_ps1(void)
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{
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fstr_append_char(&PS1, shinfo.tag);
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fstr_append_char(&PS1, ' ');
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}
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