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Commit940d136

Browse files
committed
Centralize single quote escaping in src/port/quotes.c
For code-reuse in upcoming functionality in pg_basebackup.Zoltan Boszormenyi
1 parentfc87450 commit940d136

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5 files changed

+53
-31
lines changed

5 files changed

+53
-31
lines changed

‎src/bin/initdb/initdb.c‎

Lines changed: 12 additions & 29 deletions
Original file line numberDiff line numberDiff line change
@@ -354,6 +354,18 @@ pg_strdup(const char *s)
354354
returnresult;
355355
}
356356

357+
staticchar*
358+
escape_quotes(constchar*src)
359+
{
360+
char*result=escape_single_quotes_ascii(src);
361+
if (!result)
362+
{
363+
fprintf(stderr,_("%s: out of memory\n"),progname);
364+
exit(1);
365+
}
366+
returnresult;
367+
}
368+
357369
/*
358370
* make a copy of the array of lines, with token replaced by replacement
359371
* the first time it occurs on each line.
@@ -2415,35 +2427,6 @@ check_ok(void)
24152427
}
24162428
}
24172429

2418-
/*
2419-
* Escape (by doubling) any single quotes or backslashes in given string
2420-
*
2421-
* Note: this is used to process both postgresql.conf entries and SQL
2422-
* string literals. Since postgresql.conf strings are defined to treat
2423-
* backslashes as escapes, we have to double backslashes here.Hence,
2424-
* when using this for a SQL string literal, use E'' syntax.
2425-
*
2426-
* We do not need to worry about encoding considerations because all
2427-
* valid backend encodings are ASCII-safe.
2428-
*/
2429-
staticchar*
2430-
escape_quotes(constchar*src)
2431-
{
2432-
intlen=strlen(src),
2433-
i,
2434-
j;
2435-
char*result=pg_malloc(len*2+1);
2436-
2437-
for (i=0,j=0;i<len;i++)
2438-
{
2439-
if (SQL_STR_DOUBLE(src[i], true))
2440-
result[j++]=src[i];
2441-
result[j++]=src[i];
2442-
}
2443-
result[j]='\0';
2444-
returnresult;
2445-
}
2446-
24472430
/* Hack to suppress a warning about %x from some versions of gcc */
24482431
staticinlinesize_t
24492432
my_strftime(char*s,size_tmax,constchar*fmt,conststructtm*tm)

‎src/include/port.h‎

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -465,4 +465,7 @@ extern intpg_check_dir(const char *dir);
465465
/* port/pgmkdirp.c */
466466
externintpg_mkdir_p(char*path,intomode);
467467

468+
/* port/quotes.c */
469+
externchar*escape_single_quotes_ascii(constchar*src);
470+
468471
#endif/* PG_PORT_H */

‎src/port/Makefile‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -32,7 +32,7 @@ LIBS += $(PTHREAD_LIBS)
3232

3333
OBJS =$(LIBOBJS) chklocale.o dirmod.o erand48.o exec.o fls.o inet_net_ntop.o\
3434
noblock.o path.o pgcheckdir.o pg_crc.o pgmkdirp.o pgsleep.o\
35-
pgstrcasecmp.o qsort.o qsort_arg.o sprompt.o tar.o thread.o
35+
pgstrcasecmp.o qsort.o qsort_arg.oquotes.osprompt.o tar.o thread.o
3636

3737
# foo_srv.o and foo.o are both built from foo.c, but only foo.o has -DFRONTEND
3838
OBJS_SRV =$(OBJS:%.o=%_srv.o)

‎src/port/quotes.c‎

Lines changed: 36 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,36 @@
1+
#include"c.h"
2+
3+
/*
4+
* Escape (by doubling) any single quotes or backslashes in given string
5+
*
6+
* Note: this is used to process postgresql.conf entries and to quote
7+
* string literals in pg_basebackup for creating recovery.conf.
8+
* Since postgresql.conf strings are defined to treat backslashes as escapes,
9+
* we have to double backslashes here.
10+
*
11+
* Since this function is only used for parsing or creating configuration
12+
* files, we do not care about encoding considerations.
13+
*
14+
* Returns a malloced() string that it's the responsibility of the caller
15+
* to free.
16+
*/
17+
char*
18+
escape_single_quotes_ascii(constchar*src)
19+
{
20+
intlen=strlen(src),
21+
i,
22+
j;
23+
char*result=malloc(len*2+1);
24+
25+
if (!result)
26+
returnNULL;
27+
28+
for (i=0,j=0;i<len;i++)
29+
{
30+
if (SQL_STR_DOUBLE(src[i], true))
31+
result[j++]=src[i];
32+
result[j++]=src[i];
33+
}
34+
result[j]='\0';
35+
returnresult;
36+
}

‎src/tools/msvc/Mkvcbuild.pm‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -59,7 +59,7 @@ sub mkvcbuild
5959
chklocale.c crypt.c fls.c fseeko.c getrusage.c inet_aton.c random.c
6060
srandom.c getaddrinfo.c gettimeofday.c inet_net_ntop.c kill.c open.c
6161
erand48.c snprintf.c strlcat.c strlcpy.c dirmod.c exec.c noblock.c path.c
62-
pgcheckdir.c pg_crc.c pgmkdirp.c pgsleep.c pgstrcasecmp.c qsort.c qsort_arg.c
62+
pgcheckdir.c pg_crc.c pgmkdirp.c pgsleep.c pgstrcasecmp.c qsort.c qsort_arg.c quotes.c
6363
sprompt.c tar.c thread.c getopt.c getopt_long.c dirent.c rint.c win32env.c
6464
win32error.c win32setlocale.c);
6565

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