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/*
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* Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#ifdef HAS_WINSOCK2
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include "talon_process.h"
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#include "sema.h"
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#include "buffer.h"
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#include "../config.h"
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#ifdef HAS_GETCOMMANDLINE
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#include "chomp.h"
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#endif
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/* The output semaphore. */
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sbs_semaphore talon_sem;
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#define TALON_ATTEMPT_STRMAX 32
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#define RECIPETAG_STRMAX 2048
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#define STATUS_STRMAX 120
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#define TALONDELIMITER '|'
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#define VARNAMEMAX 100
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#define VARVALMAX 1024
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#define HOSTNAME_MAX 100
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#include "log.h"
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#ifdef HAS_MSVCRT
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/* Make all output handling binary */
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unsigned int _CRT_fmode = _O_BINARY;
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#endif
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double getseconds(void)
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{
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struct timeval tp;
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gettimeofday(&tp, NULL);
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return (double)tp.tv_sec + ((double)tp.tv_usec)/1000000.0L;
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}
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void talon_setenv(char name[], char val[])
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{
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#if defined(HAS_GETENVIRONMENTVARIABLE)
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SetEnvironmentVariableA(name,val);
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#elif defined(HAS_GETENV)
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setenv(name,val, 1);
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#else
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# error "Need a function for setting environment variables"
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#endif
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}
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#define TALON_MAXENV 4096
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char * talon_getenv(char name[])
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{
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#if defined(HAS_SETENV)
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char *val = getenv(name);
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char *dest = NULL;
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if (val)
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{
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dest = malloc(strlen(val) + 1);
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if (dest)
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{
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strcpy(dest,val);
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}
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}
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return dest;
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#elif defined(HAS_SETENVIRONMENTVARIABLE)
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char *val = malloc(TALON_MAXENV);
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if (0 != GetEnvironmentVariableA(name,val,TALON_MAXENV-1))
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return val;
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else
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return NULL;
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#else
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# error "Need a function for setting environment variables"
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#endif
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}
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void prependattributes(buffer *b, char *attributes)
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{
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char recipetag[RECIPETAG_STRMAX];
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char *rt;
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char envvarname[VARNAMEMAX];
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char *att;
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strcpy(recipetag, "<recipe ");
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rt = recipetag + 8;
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att = attributes;
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while (*att != '\0' && rt < &recipetag[RECIPETAG_STRMAX-1])
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{
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if ( *att == '$' )
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{
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int e;
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char *v;
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/* insert the value of an environent variable */
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att++;
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e = 0;
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do {
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envvarname[e++] = *att;
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att++;
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} while ( e < (VARNAMEMAX-1) && (isalnum(*att) || *att == '_'));
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envvarname[e] = '\0';
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/* DEBUG(("envvarname: %s\n", envvarname));*/
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v = talon_getenv(envvarname);
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if (v)
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{
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/* DEBUG((" value: %s\n", v)); */
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char *oldv=v;
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while (*v != '\0' && rt < &recipetag[RECIPETAG_STRMAX-1])
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{
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*rt = *v;
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rt++; v++;
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}
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free(oldv);
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}
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} else {
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*rt = *att;
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rt++; att++;
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}
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}
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char *finish = ">\n<![CDATA[\n";
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while (*finish != '\0' && rt < &recipetag[RECIPETAG_STRMAX-1])
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{
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*rt = *finish;
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*rt++; finish++;
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}
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*rt = '\0';
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buffer_prepend(b, recipetag, strlen(recipetag));
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}
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/* read a recipe string from a temporary file.
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*
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* We only expect to do this for very long command lines on
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* Windows. So allocate the maximum size for CreateProcess on
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* Win32 (32768 bytes) and error if the file is longer than that.
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*
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*/
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char *read_recipe_from_file(const char *filename)
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{
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FILE *fp = fopen(filename, "r");
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if (!fp)
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{
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error("talon: error: could not read '%s'\n", filename);
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return NULL;
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}
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int max_length = 32768;
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char *recipe = (char*)malloc(max_length);
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if (!recipe)
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{
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error("talon: error: could not allocate memory to read '%s'\n", filename);
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return NULL;
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}
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int position = 0;
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/* read the file one character at a time */
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int c;
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while ((c = getc(fp)) != EOF)
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{
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switch (c)
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{
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case '\r':
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case '\n':
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/* ignore newlines */
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break;
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case '"':
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/* double quotes have to be escaped so they aren't lost later */
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if (position < max_length)
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recipe[position++] = '\\';
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if (position < max_length)
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recipe[position++] = c;
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break;
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default:
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if (position < max_length)
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recipe[position++] = c;
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break;
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}
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}
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fclose(fp);
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/* add a terminating \0 */
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if (position < max_length)
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recipe[position] = '\0';
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else
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{
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error("talon: error: command longer than 32768 in '%s'\n", filename);
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return NULL;
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}
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return recipe;
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}
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int main(int argc, char *argv[])
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{
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/* find the argument to -c then strip the talon related front section */
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char *recipe = NULL;
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int talon_returncode = 0;
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#ifdef HAS_WINSOCK2
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WSADATA wsaData;
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WSAStartup(MAKEWORD(2,2), &wsaData);
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/* We ignore the result as we are only doing this to use gethostname
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and if that fails then leaving the host attribute blank is perfectly
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acceptable.
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*/
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#endif
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#ifdef HAS_GETCOMMANDLINE
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char *commandline= GetCommandLine();
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/*
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* The command line should be either,
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* talon -c "some shell commands"
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* or
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* talon shell_script_file
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*
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* talon could be an absolute path and may have a .exe extension.
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*/
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recipe = chompCommand(commandline);
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if (recipe)
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{
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/* there was a -c so extract the quoted commands */
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int recipelen = strlen(recipe);
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if (recipelen > 0 && recipe[recipelen - 1] == '"')
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recipe[recipelen - 1] = '\0'; /* remove trailing quote */
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}
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else
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{
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/* there was no -c so extract the argument as a filename */
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recipe = strstr(commandline, "talon");
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if (recipe)
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{
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/* find the first space */
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while (!isspace(*recipe) && *recipe != '\0')
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recipe++;
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/* skip past the spaces */
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while (isspace(*recipe))
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recipe++;
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recipe = read_recipe_from_file(recipe);
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if (!recipe)
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{
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error("talon: error: bad script file in shell call '%s'\n", commandline);
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return 1;
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}
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}
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else
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{
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error("talon: error: no 'talon' in shell call '%s'\n", commandline);
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return 1;
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}
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}
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#else
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/*
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* The command line should be either,
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* talon -c "some shell commands"
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* or
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* talon shell_script_file
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*
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* talon could be an absolute path and may have a .exe extension.
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*/
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switch (argc)
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{
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case 2:
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recipe = read_recipe_from_file(argv[1]);
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break;
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case 3:
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if (strcmp("-c", argv[1]) != 0)
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{
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error("talon: error: %s\n", "usage is 'talon -c command' or 'talon script_filename'");
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return 1;
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}
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recipe = argv[2];
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break;
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default:
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error("talon: error: %s\n", "usage is 'talon -c command' or 'talon script_filename'");
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return 1;
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}
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#endif
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/* did we get a recipe at all? */
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if (!recipe)
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{
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error("talon: error: %s", "no recipe supplied to the shell.\n");
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return 1;
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}
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/* remove any leading white space on the recipe */
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while (isspace(*recipe))
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recipe++;
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/* turn debugging on? */
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char *debugstr=talon_getenv("TALON_DEBUG");
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if (debugstr)
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{
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loglevel=LOGDEBUG;
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free(debugstr); debugstr=NULL;
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}
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DEBUG(("talon: recipe: %s\n", recipe));
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/* Make sure that the agent's hostname can be put into the host attribute */
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char hostname[HOSTNAME_MAX];
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int hostresult=0;
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hostresult = gethostname(hostname, HOSTNAME_MAX-1);
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if (0 != hostresult)
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{
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DEBUG(("talon: failed to get hostname: %d\n", hostresult));
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hostname[0] = '\0';
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}
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talon_setenv("HOSTNAME", hostname);
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DEBUG(("talon: setenv: hostname: %s\n", hostname));
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char varname[VARNAMEMAX];
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char varval[VARVALMAX];
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int dotagging = 0;
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int force_descramble_off = 0;
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char *rp = recipe;
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if (*rp == TALONDELIMITER) {
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dotagging = 1;
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/* there are some talon-specific settings
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* in the command which must be stripped */
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rp++;
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char *out = varname;
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char *stopout = varname + VARNAMEMAX - 1;
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DEBUG(("talon: parameters found\n"));
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while (*rp != '\0')
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{
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switch (*rp) {
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case '=':
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*out = '\0';
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DEBUG(("talon: varname: %s\n",varname));
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out = varval;
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stopout = varval + VARVALMAX - 1;
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break;
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case ';':
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*out = '\0';
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DEBUG(("talon: varval: %s\n",varval));
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talon_setenv(varname, varval);
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out = varname;
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stopout = varname + VARNAMEMAX - 1;
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break;
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default:
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*out = *rp;
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if (out < stopout)
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out++;
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break;
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}
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if (*rp == TALONDELIMITER)
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{
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rp++;
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break;
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}
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rp++;
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}
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} else {
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/* This is probably a $(shell) statement
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* in make so no descrambling needed and
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* tags are definitely not wanted as they
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* would corrupt the expected output*/
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force_descramble_off = 1;
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}
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/* Now take settings from the environment (having potentially modified it) */
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if (talon_getenv("TALON_DEBUG"))
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loglevel=LOGDEBUG;
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int enverrors = 0;
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char *shell = talon_getenv("TALON_SHELL");
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if (!shell)
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{
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error("error: %s", "TALON_SHELL not set in environment\n");
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enverrors++;
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}
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int timeout = -1;
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char *timeout_str = talon_getenv("TALON_TIMEOUT");
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if (timeout_str)
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{
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timeout = atoi(timeout_str);
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free(timeout_str); timeout_str = NULL;
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}
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char *buildid = talon_getenv("TALON_BUILDID");
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if (!buildid)
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{
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error("error: %s", "TALON_BUILDID not set in environment\n");
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enverrors++;
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}
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char *attributes = talon_getenv("TALON_RECIPEATTRIBUTES");
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if (!attributes)
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{
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error("error: %s", "TALON_RECIPEATTRIBUTES not set in environment\n");
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enverrors++;
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460 |
}
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461 |
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462 |
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463 |
int max_retries = 0;
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|
464 |
char *retries_str = talon_getenv("TALON_RETRIES");
|
|
465 |
if (retries_str)
|
|
466 |
{
|
|
467 |
max_retries = atoi(retries_str);
|
|
468 |
free(retries_str); retries_str = NULL;
|
|
469 |
}
|
|
470 |
|
|
471 |
|
|
472 |
int descramble = 0;
|
|
473 |
if (! force_descramble_off )
|
|
474 |
{
|
|
475 |
char *descramblestr = talon_getenv("TALON_DESCRAMBLE");
|
|
476 |
if (descramblestr)
|
|
477 |
{
|
|
478 |
if (*descramblestr == '0')
|
|
479 |
descramble = 0;
|
|
480 |
else
|
|
481 |
descramble = 1;
|
|
482 |
|
|
483 |
free(descramblestr); descramblestr = NULL;
|
|
484 |
}
|
|
485 |
}
|
|
486 |
|
|
487 |
|
|
488 |
|
|
489 |
/* Talon can look in a flags variable to alter it's behaviour */
|
|
490 |
int force_success = 0;
|
|
491 |
char *flags_str = talon_getenv("TALON_FLAGS");
|
|
492 |
if (flags_str)
|
|
493 |
{
|
|
494 |
int c;
|
|
495 |
for (c=0; flags_str[c] !=0; c++)
|
|
496 |
flags_str[c] = tolower(flags_str[c]);
|
|
497 |
|
|
498 |
if (strstr(flags_str, "forcesuccess"))
|
|
499 |
force_success = 1;
|
|
500 |
|
|
501 |
/* don't put <recipe> or <CDATA<[[ tags around the output. e.g. if it's XML already*/
|
|
502 |
if (strstr(flags_str, "rawoutput"))
|
|
503 |
{
|
|
504 |
dotagging = 0;
|
|
505 |
}
|
|
506 |
|
|
507 |
free(flags_str); flags_str = NULL;
|
|
508 |
}
|
|
509 |
|
|
510 |
/* Talon subprocesses need to have the "correct" shell variable set. */
|
|
511 |
talon_setenv("SHELL", shell);
|
|
512 |
|
|
513 |
/* we have allowed some errors to build up so that the user
|
|
514 |
* can see all of them before we stop and force the user
|
|
515 |
* to fix them
|
|
516 |
*/
|
|
517 |
if (enverrors)
|
|
518 |
{
|
|
519 |
return 1;
|
|
520 |
}
|
|
521 |
|
|
522 |
|
|
523 |
/* Run the recipe repeatedly until the retry count expires or
|
|
524 |
* it succeeds.
|
|
525 |
*/
|
|
526 |
int attempt = 0, retries = max_retries;
|
|
527 |
proc *p = NULL;
|
|
528 |
|
|
529 |
char *args[5];
|
|
530 |
|
|
531 |
char *qrp=rp;
|
|
532 |
|
|
533 |
#ifdef HAS_GETCOMMANDLINE
|
|
534 |
/* re-quote the argument to -c since this helps windows deal with it */
|
|
535 |
int qrpsize = strlen(rp) + 3;
|
|
536 |
qrp = malloc(qrpsize);
|
|
537 |
qrp[0] = '"';
|
|
538 |
strcpy(&qrp[1], rp);
|
|
539 |
qrp[qrpsize-2] = '"';
|
|
540 |
qrp[qrpsize-1] = '\0';
|
|
541 |
#endif
|
|
542 |
|
|
543 |
int index = 0;
|
|
544 |
args[index++] = shell;
|
|
545 |
|
|
546 |
if (dotagging) /* don't do bash -x for non-tagged commands e.g. $(shell output) */
|
|
547 |
args[index++] = "-x";
|
|
548 |
|
|
549 |
args[index++] = "-c";
|
|
550 |
args[index++] = qrp;
|
|
551 |
args[index++] = NULL;
|
|
552 |
|
|
553 |
/* get the semaphore ready */
|
|
554 |
talon_sem.name = buildid;
|
|
555 |
talon_sem.timeout = timeout;
|
|
556 |
do
|
|
557 |
{
|
|
558 |
char talon_attempt[TALON_ATTEMPT_STRMAX];
|
|
559 |
double start_time = getseconds();
|
|
560 |
|
|
561 |
attempt++;
|
|
562 |
|
|
563 |
snprintf(talon_attempt, TALON_ATTEMPT_STRMAX-1, "%d", attempt);
|
|
564 |
talon_attempt[TALON_ATTEMPT_STRMAX - 1] = '\0';
|
|
565 |
|
|
566 |
talon_setenv("TALON_ATTEMPT", talon_attempt);
|
|
567 |
|
|
568 |
p = process_run(shell, args, timeout);
|
|
569 |
|
|
570 |
double end_time = getseconds();
|
|
571 |
|
|
572 |
if (p)
|
|
573 |
{
|
|
574 |
char status[STATUS_STRMAX];
|
|
575 |
char timestat[STATUS_STRMAX];
|
|
576 |
|
|
577 |
talon_returncode = p->returncode;
|
|
578 |
|
|
579 |
if (dotagging)
|
|
580 |
{
|
|
581 |
char *flagsstr = force_success == 0 ? "" : " flags='FORCESUCCESS'";
|
|
582 |
char *reasonstr = "" ;
|
|
583 |
|
|
584 |
if (p->causeofdeath == PROC_TIMEOUTDEATH)
|
|
585 |
reasonstr = " reason='timeout'";
|
|
586 |
|
|
587 |
if (p->returncode != 0)
|
|
588 |
{
|
|
589 |
char *exitstr = (force_success || retries <= 0) ? "failed" : "retry";
|
|
590 |
snprintf(status, STATUS_STRMAX - 1, "\n<status exit='%s' code='%d' attempt='%d'%s%s />", exitstr, p->returncode, attempt, flagsstr, reasonstr );
|
|
591 |
} else {
|
|
592 |
snprintf(status, STATUS_STRMAX - 1, "\n<status exit='ok' attempt='%d'%s%s />", attempt, flagsstr, reasonstr );
|
|
593 |
}
|
|
594 |
status[STATUS_STRMAX-1] = '\0';
|
|
595 |
|
|
596 |
snprintf(timestat, STATUS_STRMAX - 1, "<time start='%.5f' elapsed='%.3f' />",start_time, end_time-start_time );
|
|
597 |
timestat[STATUS_STRMAX-1] = '\0';
|
|
598 |
|
|
599 |
prependattributes(p->output, attributes);
|
|
600 |
|
|
601 |
if (dotagging) {
|
|
602 |
}
|
|
603 |
buffer_append(p->output, "\n]]>", 4);
|
|
604 |
buffer_append(p->output, timestat, strlen(timestat));
|
|
605 |
buffer_append(p->output, status, strlen(status));
|
|
606 |
buffer_append(p->output, "\n</recipe>\n", 11);
|
|
607 |
}
|
|
608 |
|
|
609 |
unsigned int iterator = 0;
|
|
610 |
byteblock *bb;
|
|
611 |
|
|
612 |
if (descramble)
|
|
613 |
sema_wait(&talon_sem);
|
|
614 |
while ((bb = buffer_getbytes(p->output, &iterator)))
|
|
615 |
{
|
|
616 |
write(STDOUT_FILENO, &bb->byte0, bb->fill);
|
|
617 |
}
|
|
618 |
if (descramble)
|
|
619 |
sema_release(&talon_sem);
|
|
620 |
|
|
621 |
|
|
622 |
if (p->returncode == 0 || force_success)
|
|
623 |
{
|
|
624 |
process_free(&p);
|
|
625 |
break;
|
|
626 |
}
|
|
627 |
|
|
628 |
process_free(&p);
|
|
629 |
} else {
|
|
630 |
error("error: failed to run shell: %s: check the SHELL environment variable.\n", args[0]);
|
|
631 |
return 1;
|
|
632 |
}
|
|
633 |
|
|
634 |
retries--;
|
|
635 |
}
|
|
636 |
while (retries >= 0);
|
|
637 |
|
|
638 |
if (buildid) free(buildid); buildid = NULL;
|
|
639 |
if (attributes) free(attributes); attributes = NULL;
|
|
640 |
if (shell) free(shell); shell = NULL;
|
|
641 |
|
|
642 |
if (force_success)
|
|
643 |
return 0;
|
|
644 |
else
|
|
645 |
return talon_returncode;
|
|
646 |
}
|