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Lines 23-28
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#include <errno.h> // errno |
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#include <errno.h> // errno |
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#include <stdlib.h> // free |
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#include <stdlib.h> // free |
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#ifndef WIN32 |
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#include <unistd.h> // dup, dup2, close |
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#include <fcntl.h> // fcntl, F_GETFD, F_SETFD |
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#endif |
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#include "util.h" |
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#include "util.h" |
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#define BUFLEN 500 |
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#define BUFLEN 500 |
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Lines 55-65
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* we have many interpreters (with different PID), so the |
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* we have many interpreters (with different PID), so the |
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* thread-safe issue doesn't come up as well. |
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* thread-safe issue doesn't come up as well. |
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*/ |
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*/ |
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/* |
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* As originally implemented, this technique grossly violates |
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* the Principle of Least Astonishment on Unix by destroying |
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* the output redirections of any TCL program that uses tcl-snmptools. |
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* Therefore we attempt to preserve the original stdout/stderr. |
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*/ |
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#ifndef WIN32 |
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static int stdout_fd, stderr_fd; |
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static fpos_t stdout_pos, stderr_pos; |
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static long stdout_flags, stderr_flags; |
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#endif |
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char *captureOutput(void) { |
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char *captureOutput(void) { |
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extern char *tempfile; |
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extern char *tempfile; |
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FILE *fd; |
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FILE *fd; |
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tempfile = tempnam(TMP, "TEMP"); |
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tempfile = tempnam(TMP, "TEMP"); |
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#ifndef WIN32 |
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/* preserve the original stdout */ |
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fflush(stdout); |
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fgetpos(stdout, &stdout_pos); |
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stdout_flags = fcntl(fileno(stdout), F_GETFD); |
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stdout_fd = dup(fileno(stdout)); |
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#endif |
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fd = freopen(tempfile, "a", stdout); |
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fd = freopen(tempfile, "a", stdout); |
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if(fd == NULL) { |
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if(fd == NULL) { |
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printres("%s", strerror(errno)); |
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printres("%s", strerror(errno)); |
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Lines 68-73
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} |
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} |
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setvbuf(fd, (char *) NULL, _IONBF, 0); |
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setvbuf(fd, (char *) NULL, _IONBF, 0); |
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#ifndef WIN32 |
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/* preserve the original stderr */ |
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fflush(stderr); |
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fgetpos(stderr, &stderr_pos); |
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stderr_flags = fcntl(fileno(stderr), F_GETFD); |
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stderr_fd = dup(fileno(stderr)); |
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#endif |
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fd = freopen(tempfile, "a", stderr); |
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fd = freopen(tempfile, "a", stderr); |
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if(fd == NULL) { |
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if(fd == NULL) { |
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printres("%s", strerror(errno)); |
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printres("%s", strerror(errno)); |
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Lines 83-88
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int restoreOutput(char *tempfile) { |
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int restoreOutput(char *tempfile) { |
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int errors = 0; |
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int errors = 0; |
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#ifdef WIN32 |
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/* Ignore errors but include in the output and return value */ |
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/* Ignore errors but include in the output and return value */ |
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if(freopen(TTY, "w", stdout) == NULL) { |
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if(freopen(TTY, "w", stdout) == NULL) { |
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errors++; |
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errors++; |
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Lines 92-97
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errors++; |
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errors++; |
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printres("%s", strerror(errno)); |
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printres("%s", strerror(errno)); |
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} |
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} |
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#else |
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/* restore the original stdout */ |
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fflush(stdout); |
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dup2(stdout_fd, fileno(stdout)); |
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fcntl(fileno(stdout), F_SETFD, stdout_flags); |
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close(stdout_fd); |
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clearerr(stdout); |
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fsetpos(stdout, &stdout_pos); |
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/* restore the original stderr */ |
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fflush(stderr); |
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dup2(stderr_fd, fileno(stderr)); |
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fcntl(fileno(stderr), F_SETFD, stderr_flags); |
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close(stderr_fd); |
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clearerr(stderr); |
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fsetpos(stderr, &stderr_pos); |
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#endif |
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if(remove(tempfile)) { |
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if(remove(tempfile)) { |
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errors++; |
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errors++; |
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Lines 106-111
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FILE *fd; |
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FILE *fd; |
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int errors = 0; |
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int errors = 0; |
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#ifdef WIN32 |
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/* Ignore errors but include in the output and return value */ |
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/* Ignore errors but include in the output and return value */ |
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if(freopen(TTY, "w", stdout) == NULL) { |
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if(freopen(TTY, "w", stdout) == NULL) { |
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errors++; |
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errors++; |
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Lines 115-120
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errors++; |
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errors++; |
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printres("%s", strerror(errno)); |
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printres("%s", strerror(errno)); |
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} |
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} |
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#else |
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/* restore the original stdout */ |
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fflush(stdout); |
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dup2(stdout_fd, fileno(stdout)); |
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close(stdout_fd); |
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clearerr(stdout); |
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fsetpos(stdout, &stdout_pos); |
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/* restore the original stderr */ |
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fflush(stderr); |
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dup2(stderr_fd, fileno(stderr)); |
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close(stderr_fd); |
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clearerr(stderr); |
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fsetpos(stderr, &stderr_pos); |
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#endif |
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fd = fopen(tempfile, "r"); |
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fd = fopen(tempfile, "r"); |
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if(fd == NULL) { |
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if(fd == NULL) { |
