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real_dir_from_tilde() - Rewritten using getpwent (suggected by Adam)

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git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@498 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
This commit is contained in:
Chris Allegretta 2001-01-22 22:17:08 +00:00
parent 60cd6aa04f
commit ee733e6d4c
2 changed files with 15 additions and 40 deletions
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2
ChangeLog
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@ -12,6 +12,8 @@ General
discovered by David Sobon).
username_tab_completion()
- Optimization and removal of useless vars (Rocco).
real_dir_from_tilde()
- Rewritten using getpwent (suggested by Adam).
- global.c:
- Don't define toggles global or toggle_init_one if using --tiny.
- nano.c:

53
files.c
View File

@ -29,6 +29,7 @@
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
#include <pwd.h>
#include "config.h"
#include "proto.h"
@ -581,8 +582,9 @@ int do_writeout_void(void)
*/
char *real_dir_from_tilde(char *buf)
{
char *dirtmp = NULL, *line = NULL, byte[1], *lineptr;
int fd, i, status, searchctr = 1;
char *dirtmp = NULL;
int searchctr = 1;
struct passwd *userdata;
if (buf[0] == '~') {
if (buf[1] == '~')
@ -599,51 +601,22 @@ char *real_dir_from_tilde(char *buf)
}
} else if (buf[1] != 0) {
if ((fd = open("/etc/passwd", O_RDONLY)) == -1)
goto abort;
/* Figure how how much of of the str we need to compare */
for (searchctr = 1; buf[searchctr] != '/' &&
buf[searchctr] != 0; searchctr++);
do {
i = 0;
line = nmalloc(1);
while ((status = read(fd, byte, 1)) != 0
&& byte[0] != '\n') {
for (userdata = getpwent(); userdata != NULL &&
strncmp(userdata->pw_name, &buf[1], searchctr - 1);
userdata = getpwent());
line[i] = byte[0];
i++;
line = nrealloc(line, i + 1);
}
line[i] = 0;
if (userdata == NULL) /* No such user or getpwent() failed */
goto abort;
if (i == 0)
goto abort;
/* Else copy the new string into the new buf */
dirtmp = nmalloc(strlen(buf) + 2 + strlen(userdata->pw_dir));
line[i] = 0;
lineptr = strtok(line, ":");
if (!strncmp(lineptr, &buf[1], searchctr - 1)) {
/* Okay, skip to the password portion now */
for (i = 0; i <= 4 && lineptr != NULL; i++)
lineptr = strtok(NULL, ":");
if (lineptr == NULL)
goto abort;
/* Else copy the new string into the new buf */
dirtmp = nmalloc(strlen(buf) + 2 + strlen(lineptr));
sprintf(dirtmp, "%s%s", lineptr, &buf[searchctr]);
free(line);
break;
}
free(line);
} while (status != 0);
sprintf(dirtmp, "%s%s", userdata->pw_dir, &buf[searchctr]);
endpwent();
}
} else
dirtmp = mallocstrcpy(dirtmp, buf);