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diff --git a/plugins/popen.c b/plugins/popen.c
index 7aa18bf..2b9824b 100644
--- a/plugins/popen.c
+++ b/plugins/popen.c
@@ -47,12 +47,12 @@ extern pid_t *childpid;
47extern int *child_stderr_array; 47extern int *child_stderr_array;
48extern FILE *child_process; 48extern FILE *child_process;
49 49
50FILE *spopen(const char *); 50FILE *spopen(const char * /*cmdstring*/);
51int spclose(FILE *); 51int spclose(FILE * /*fp*/);
52#ifdef REDHAT_SPOPEN_ERROR 52#ifdef REDHAT_SPOPEN_ERROR
53void popen_sigchld_handler(int); 53void popen_sigchld_handler(int);
54#endif 54#endif
55void popen_timeout_alarm_handler(int); 55void popen_timeout_alarm_handler(int /*signo*/);
56 56
57#include <stdarg.h> /* ANSI C header file */ 57#include <stdarg.h> /* ANSI C header file */
58#include <fcntl.h> 58#include <fcntl.h>
@@ -84,15 +84,6 @@ static volatile int childtermd = 0;
84#endif 84#endif
85 85
86FILE *spopen(const char *cmdstring) { 86FILE *spopen(const char *cmdstring) {
87 char *env[2];
88 char *cmd = NULL;
89 char **argv = NULL;
90 char *str, *tmp;
91 int argc;
92
93 int i = 0, pfd[2], pfderr[2];
94 pid_t pid;
95
96#ifdef RLIMIT_CORE 87#ifdef RLIMIT_CORE
97 /* do not leave core files */ 88 /* do not leave core files */
98 struct rlimit limit; 89 struct rlimit limit;
@@ -101,6 +92,7 @@ FILE *spopen(const char *cmdstring) {
101 setrlimit(RLIMIT_CORE, &limit); 92 setrlimit(RLIMIT_CORE, &limit);
102#endif 93#endif
103 94
95 char *env[2];
104 env[0] = strdup("LC_ALL=C"); 96 env[0] = strdup("LC_ALL=C");
105 env[1] = NULL; 97 env[1] = NULL;
106 98
@@ -108,6 +100,7 @@ FILE *spopen(const char *cmdstring) {
108 if (cmdstring == NULL) 100 if (cmdstring == NULL)
109 return (NULL); 101 return (NULL);
110 102
103 char *cmd = NULL;
111 /* make copy of command string so strtok() doesn't silently modify it */ 104 /* make copy of command string so strtok() doesn't silently modify it */
112 /* (the calling program may want to access it later) */ 105 /* (the calling program may want to access it later) */
113 cmd = malloc(strlen(cmdstring) + 1); 106 cmd = malloc(strlen(cmdstring) + 1);
@@ -123,6 +116,8 @@ FILE *spopen(const char *cmdstring) {
123 if (strstr(cmdstring, " ' ") || strstr(cmdstring, "'''")) 116 if (strstr(cmdstring, " ' ") || strstr(cmdstring, "'''"))
124 return NULL; 117 return NULL;
125 118
119 int argc;
120 char **argv = NULL;
126 /* there cannot be more args than characters */ 121 /* there cannot be more args than characters */
127 argc = strlen(cmdstring) + 1; /* add 1 for NULL termination */ 122 argc = strlen(cmdstring) + 1; /* add 1 for NULL termination */
128 argv = malloc(sizeof(char *) * argc); 123 argv = malloc(sizeof(char *) * argc);
@@ -132,6 +127,8 @@ FILE *spopen(const char *cmdstring) {
132 return NULL; 127 return NULL;
133 } 128 }
134 129
130 int i = 0;
131 char *str;
135 /* loop to get arguments to command */ 132 /* loop to get arguments to command */
136 while (cmd) { 133 while (cmd) {
137 str = cmd; 134 str = cmd;
@@ -150,7 +147,7 @@ FILE *spopen(const char *cmdstring) {
150 str[strcspn(str, "'")] = 0; 147 str[strcspn(str, "'")] = 0;
151 } else if (strcspn(str, "'") < strcspn(str, " \t\r\n")) { 148 } else if (strcspn(str, "'") < strcspn(str, " \t\r\n")) {
152 /* handle --option='foo bar' strings */ 149 /* handle --option='foo bar' strings */
153 tmp = str + strcspn(str, "'") + 1; 150 char *tmp = str + strcspn(str, "'") + 1;
154 if (!strstr(tmp, "'")) 151 if (!strstr(tmp, "'"))
155 return NULL; /* balanced? */ 152 return NULL; /* balanced? */
156 tmp += strcspn(tmp, "'") + 1; 153 tmp += strcspn(tmp, "'") + 1;
@@ -184,9 +181,11 @@ FILE *spopen(const char *cmdstring) {
184 return (NULL); 181 return (NULL);
185 } 182 }
186 183
184 int pfd[2];
187 if (pipe(pfd) < 0) 185 if (pipe(pfd) < 0)
188 return (NULL); /* errno set by pipe() */ 186 return (NULL); /* errno set by pipe() */
189 187
188 int pfderr[2];
190 if (pipe(pfderr) < 0) 189 if (pipe(pfderr) < 0)
191 return (NULL); /* errno set by pipe() */ 190 return (NULL); /* errno set by pipe() */
192 191
@@ -196,9 +195,11 @@ FILE *spopen(const char *cmdstring) {
196 } 195 }
197#endif 196#endif
198 197
198 pid_t pid;
199 if ((pid = fork()) < 0) 199 if ((pid = fork()) < 0)
200 return (NULL); /* errno set by fork() */ 200 return (NULL); /* errno set by fork() */
201 else if (pid == 0) { /* child */ 201
202 if (pid == 0) { /* child */
202 close(pfd[0]); 203 close(pfd[0]);
203 if (pfd[1] != STDOUT_FILENO) { 204 if (pfd[1] != STDOUT_FILENO) {
204 dup2(pfd[1], STDOUT_FILENO); 205 dup2(pfd[1], STDOUT_FILENO);
@@ -229,13 +230,11 @@ FILE *spopen(const char *cmdstring) {
229} 230}
230 231
231int spclose(FILE *fp) { 232int spclose(FILE *fp) {
232 int fd, status;
233 pid_t pid;
234
235 if (childpid == NULL) 233 if (childpid == NULL)
236 return (1); /* popen() has never been called */ 234 return (1); /* popen() has never been called */
237 235
238 fd = fileno(fp); 236 pid_t pid;
237 int fd = fileno(fp);
239 if ((pid = childpid[fd]) == 0) 238 if ((pid = childpid[fd]) == 0)
240 return (1); /* fp wasn't opened by popen() */ 239 return (1); /* fp wasn't opened by popen() */
241 240
@@ -248,6 +247,7 @@ int spclose(FILE *fp) {
248 ; /* wait until SIGCHLD */ 247 ; /* wait until SIGCHLD */
249#endif 248#endif
250 249
250 int status;
251 while (waitpid(pid, &status, 0) < 0) 251 while (waitpid(pid, &status, 0) < 0)
252 if (errno != EINTR) 252 if (errno != EINTR)
253 return (1); /* error other than EINTR from waitpid() */ 253 return (1); /* error other than EINTR from waitpid() */
@@ -266,10 +266,9 @@ void popen_sigchld_handler(int signo) {
266#endif 266#endif
267 267
268void popen_timeout_alarm_handler(int signo) { 268void popen_timeout_alarm_handler(int signo) {
269 int fh;
270 if (signo == SIGALRM) { 269 if (signo == SIGALRM) {
271 if (child_process != NULL) { 270 if (child_process != NULL) {
272 fh = fileno(child_process); 271 int fh = fileno(child_process);
273 if (fh >= 0) { 272 if (fh >= 0) {
274 kill(childpid[fh], SIGKILL); 273 kill(childpid[fh], SIGKILL);
275 } 274 }