118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
/*-------------------------------------------------------------------------
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*
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* system.c
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* Win32 system() and popen() replacements
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*
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*
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* Win32 needs double quotes at the beginning and end of system()
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* strings. If not, it gets confused with multiple quoted strings.
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* It also requires double-quotes around the executable name and
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* any files used for redirection. Filter other args through
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* appendShellString() to quote them.
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*
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* Generated using Win32 "CMD /?":
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*
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* 1. If all of the following conditions are met, then quote characters
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* on the command line are preserved:
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*
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* - no /S switch
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* - exactly two quote characters
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* - no special characters between the two quote characters, where special
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* is one of: &<>()@^|
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* - there are one or more whitespace characters between the two quote
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* characters
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* - the string between the two quote characters is the name of an
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* executable file.
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*
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* 2. Otherwise, old behavior is to see if the first character is a quote
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* character and if so, strip the leading character and remove the last
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* quote character on the command line, preserving any text after the last
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* quote character.
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*
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* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
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*
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* src/port/system.c
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*
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*-------------------------------------------------------------------------
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*/
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#if defined(WIN32) && !defined(__CYGWIN__)
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#ifndef FRONTEND
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#include "postgres.h"
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#else
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#include "postgres_fe.h"
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#endif
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#include <fcntl.h>
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#undef system
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#undef popen
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int
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pgwin32_system(const char *command)
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{
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size_t cmdlen = strlen(command);
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char *buf;
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int save_errno;
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int res;
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/*
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* Create a malloc'd copy of the command string, enclosed with an extra
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* pair of quotes
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*/
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buf = malloc(cmdlen + 2 + 1);
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if (buf == NULL)
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{
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errno = ENOMEM;
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return -1;
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}
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buf[0] = '"';
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memcpy(&buf[1], command, cmdlen);
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buf[cmdlen + 1] = '"';
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buf[cmdlen + 2] = '\0';
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res = system(buf);
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save_errno = errno;
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free(buf);
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errno = save_errno;
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return res;
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}
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FILE *
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pgwin32_popen(const char *command, const char *type)
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{
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size_t cmdlen = strlen(command);
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char *buf;
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int save_errno;
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FILE *res;
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/*
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* Create a malloc'd copy of the command string, enclosed with an extra
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* pair of quotes
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*/
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buf = malloc(cmdlen + 2 + 1);
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if (buf == NULL)
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{
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errno = ENOMEM;
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return NULL;
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}
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buf[0] = '"';
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memcpy(&buf[1], command, cmdlen);
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buf[cmdlen + 1] = '"';
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buf[cmdlen + 2] = '\0';
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res = _popen(buf, type);
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save_errno = errno;
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free(buf);
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errno = save_errno;
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return res;
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}
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#endif
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