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Commit714384a

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committed
Polish error messages, help output, give marginal clue about command line
option conventions. (E.g., "pg_passwd -?" should not write to a file named"-?".)
1 parentf999912 commit714384a

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1 file changed

+51
-24
lines changed

1 file changed

+51
-24
lines changed

‎src/bin/pg_passwd/pg_passwd.c

Lines changed: 51 additions & 24 deletions
Original file line numberDiff line numberDiff line change
@@ -18,18 +18,23 @@ extern char *crypt(const char *, const char *);
1818

1919
#endif
2020

21-
char*comname;
22-
staticvoidusage(FILE*stream);
21+
#definePG_PASSWD_LEN 13/* not including null */
22+
23+
constchar*progname;
24+
25+
staticvoidusage(void);
2326
staticvoidread_pwd_file(char*filename);
2427
staticvoidwrite_pwd_file(char*filename,char*bkname);
25-
staticvoidencrypt_pwd(charkey[9],charsalt[3],charpasswd[14]);
28+
staticvoidencrypt_pwd(charkey[9],charsalt[3],charpasswd[PG_PASSWD_LEN+1]);
2629
staticvoidprompt_for_username(char*username);
2730
staticvoidprompt_for_password(char*prompt,char*password);
2831

2932
staticvoid
30-
usage(FILE*stream)
33+
usage(void)
3134
{
32-
fprintf(stream,"Usage: %s <password file>\n",comname);
35+
printf("%s manipulates flat text password files for PostgreSQL.\n\n",progname);
36+
printf("Usage:\n %s PASSWORD-FILE\n\n",progname);
37+
printf("Report bugs to <pgsql-bugs@postgresql.org>.\n");
3338
}
3439

3540
typedefstruct
@@ -97,8 +102,8 @@ read_pwd_file(char *filename)
97102
if (line[l-1]=='\n')
98103
line[l-1]='\0';
99104
else
100-
{/* too long */
101-
fprintf(stderr,"%s: line%d: line too long.\n",
105+
{
106+
fprintf(stderr,"%s:%d: line too long\n",
102107
filename,npwds+1);
103108
exit(1);
104109
}
@@ -110,7 +115,7 @@ read_pwd_file(char *filename)
110115

111116
if (strlen(p)==0)
112117
{
113-
fprintf(stderr,"%s: line%d: null user name.\n",
118+
fprintf(stderr,"%s:%d: null user name\n",
114119
filename,npwds+1);
115120
exit(1);
116121
}
@@ -121,7 +126,8 @@ read_pwd_file(char *filename)
121126
{
122127
if (strcmp(pwds[i].uname,pwds[npwds].uname)==0)
123128
{
124-
fprintf(stderr,"%s: duplicated entry.\n",pwds[npwds].uname);
129+
fprintf(stderr,"Duplicated entry: %s\n",
130+
pwds[npwds].uname);
125131
exit(1);
126132
}
127133
}
@@ -135,9 +141,9 @@ read_pwd_file(char *filename)
135141
if (q!=NULL)
136142
*(q++)='\0';
137143

138-
if (strlen(p)!=13&&strcmp(p,"+")!=0)
144+
if (strlen(p)!=PG_PASSWD_LEN&&strcmp(p,"+")!=0)
139145
{
140-
fprintf(stderr,"WARNING:%s: line%d: invalid password length.\n",
146+
fprintf(stderr,"%s:%d:warning:invalid password length\n",
141147
filename,npwds+1);
142148
}
143149
pwds[npwds].pwd=strdup(p);
@@ -201,7 +207,7 @@ write_pwd_file(char *filename, char *bkname)
201207
}
202208

203209
staticvoid
204-
encrypt_pwd(charkey[9],charsalt[3],charpasswd[14])
210+
encrypt_pwd(charkey[9],charsalt[3],charpasswd[PG_PASSWD_LEN+1])
205211
{
206212
intn;
207213

@@ -233,17 +239,17 @@ encrypt_pwd(char key[9], char salt[3], char passwd[14])
233239

234240
#ifdefNOT_USED
235241
staticint
236-
check_pwd(charkey[9],charpasswd[14])
242+
check_pwd(charkey[9],charpasswd[PG_PASSWD_LEN+1])
237243
{
238-
charshouldbe[14];
244+
charshouldbe[PG_PASSWD_LEN+1];
239245
charsalt[3];
240246

241247
salt[0]=passwd[0];
242248
salt[1]=passwd[1];
243249
salt[2]='\0';
244250
encrypt_pwd(key,salt,shouldbe);
245251

246-
returnstrncmp(shouldbe,passwd,13)==0 ?1 :0;
252+
returnstrncmp(shouldbe,passwd,PG_PASSWD_LEN)==0 ?1 :0;
247253
}
248254

249255
#endif
@@ -314,32 +320,53 @@ prompt_for_password(char *prompt, char *password)
314320
int
315321
main(intargc,char*argv[])
316322
{
317-
staticcharbkname[512];
323+
staticcharbkname[MAXPGPATH];
324+
char*filename;
318325
charusername[9];
319326
charsalt[3];
320327
charkey[9],
321328
key2[9];
322-
chare_passwd[14];
329+
chare_passwd[PG_PASSWD_LEN+1];
323330
inti;
324331

325-
comname=argv[0];
332+
progname=argv[0];
333+
326334
if (argc!=2)
327335
{
328-
usage(stderr);
336+
fprintf(stderr,"%s: too %s arguments\nTry '%s -?' for help.\n",
337+
progname,argc>2 ?"many" :"few",progname);
338+
exit(1);
339+
}
340+
341+
if (strcmp(argv[1],"--help")==0||strcmp(argv[1],"-?")==0)
342+
{
343+
usage();
344+
exit(0);
345+
}
346+
if (strcmp(argv[1],"--version")==0||strcmp(argv[1],"-V")==0)
347+
{
348+
puts("pg_passwd (PostgreSQL) "PG_VERSION);
349+
exit(0);
350+
}
351+
if (argv[1][0]=='-')
352+
{
353+
fprintf(stderr,"%s: invalid option: %s\nTry '%s -?' for help.\n",
354+
progname,argv[1],progname);
329355
exit(1);
330356
}
331357

358+
filename=argv[1];
332359

333360
/* open file */
334-
read_pwd_file(argv[1]);
361+
read_pwd_file(filename);
335362

336363
/* ask for the user name and the password */
337364
prompt_for_username(username);
338365
prompt_for_password("New password: ",key);
339366
prompt_for_password("Re-enter new password: ",key2);
340367
if (strncmp(key,key2,8)!=0)
341368
{
342-
fprintf(stderr,"Password mismatch.\n");
369+
fprintf(stderr,"Password mismatch\n");
343370
exit(1);
344371
}
345372
salt[0]='\0';
@@ -358,7 +385,7 @@ main(int argc, char *argv[])
358385
{/* did not exist */
359386
if (npwds==MAXPWDS)
360387
{
361-
fprintf(stderr,"%s: cannothandle so may entries.\n",comname);
388+
fprintf(stderr,"Cannothandle so may entries\n");
362389
exit(1);
363390
}
364391
pwds[npwds].uname=strdup(username);
@@ -368,8 +395,8 @@ main(int argc, char *argv[])
368395
}
369396

370397
/* write back the file */
371-
sprintf(bkname,"%s.bk",argv[1]);
372-
write_pwd_file(argv[1],bkname);
398+
sprintf(bkname,"%s.bk",filename);
399+
write_pwd_file(filename,bkname);
373400

374401
return0;
375402
}

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