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version 1.1.1.4, 2013/07/22 10:46:12
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version 1.1.1.6, 2014/06/15 16:12:54
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Line 1
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Line 1
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| /* |
/* |
| * Copyright (c) 2009-2013 Todd C. Miller <Todd.Miller@courtesan.com> | * Copyright (c) 2009-2014 Todd C. Miller <Todd.Miller@courtesan.com> |
| * |
* |
| * Permission to use, copy, modify, and distribute this software for any |
* Permission to use, copy, modify, and distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
* purpose with or without fee is hereby granted, provided that the above |
|
Line 37
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Line 37
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| #ifdef HAVE_UNISTD_H |
#ifdef HAVE_UNISTD_H |
| # include <unistd.h> |
# include <unistd.h> |
| #endif /* HAVE_UNISTD_H */ |
#endif /* HAVE_UNISTD_H */ |
| #if TIME_WITH_SYS_TIME | #ifdef TIME_WITH_SYS_TIME |
| # include <time.h> |
# include <time.h> |
| #endif |
#endif |
| #include <errno.h> |
#include <errno.h> |
|
Line 50
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Line 50
|
| #endif |
#endif |
| |
|
| #include "sudoers.h" |
#include "sudoers.h" |
| |
#include "iolog.h" |
| |
|
| struct script_buf { |
struct script_buf { |
| int len; /* buffer length (how much read in) */ |
int len; /* buffer length (how much read in) */ |
|
Line 73 struct iolog_details {
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Line 74 struct iolog_details {
|
| int cols; |
int cols; |
| }; |
}; |
| |
|
| union io_fd { |
|
| FILE *f; |
|
| #ifdef HAVE_ZLIB_H |
|
| gzFile g; |
|
| #endif |
|
| void *v; |
|
| }; |
|
| |
|
| static struct io_log_file { |
|
| bool enabled; |
|
| const char *suffix; |
|
| union io_fd fd; |
|
| } io_log_files[] = { |
|
| #define IOFD_LOG 0 |
|
| { true, "/log" }, |
|
| #define IOFD_TIMING 1 |
|
| { true, "/timing" }, |
|
| #define IOFD_STDIN 2 |
|
| { false, "/stdin" }, |
|
| #define IOFD_STDOUT 3 |
|
| { false, "/stdout" }, |
|
| #define IOFD_STDERR 4 |
|
| { false, "/stderr" }, |
|
| #define IOFD_TTYIN 5 |
|
| { false, "/ttyin" }, |
|
| #define IOFD_TTYOUT 6 |
|
| { false, "/ttyout" }, |
|
| #define IOFD_MAX 7 |
|
| { false, NULL } |
|
| }; |
|
| |
|
| #define SESSID_MAX 2176782336U |
|
| |
|
| static int iolog_compress; |
static int iolog_compress; |
| static struct timeval last_time; |
static struct timeval last_time; |
| static unsigned int sessid_max = SESSID_MAX; |
static unsigned int sessid_max = SESSID_MAX; |
|
Line 168 io_mkdirs(char *path, mode_t mode, bool is_temp)
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Line 136 io_mkdirs(char *path, mode_t mode, bool is_temp)
|
| int |
int |
| io_set_max_sessid(const char *maxval) |
io_set_max_sessid(const char *maxval) |
| { |
{ |
| unsigned long ulval; | const char *errstr; |
| char *ep; | unsigned int value; |
| | debug_decl(io_set_max_sessid, SUDO_DEBUG_UTIL) |
| |
|
| errno = 0; | value = strtonum(maxval, 0, SESSID_MAX, &errstr); |
| ulval = strtoul(maxval, &ep, 0); | if (errstr != NULL) { |
| if (*maxval != '\0' && *ep == '\0' && | if (errno != ERANGE) { |
| (errno != ERANGE || ulval != ULONG_MAX)) { | sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO, |
| sessid_max = MIN((unsigned int)ulval, SESSID_MAX); | "bad maxseq: %s: %s", maxval, errstr); |
| return true; | debug_return_bool(false); |
| | } |
| | /* Out of range, clamp to SESSID_MAX as documented. */ |
| | value = SESSID_MAX; |
| } |
} |
| return false; | sessid_max = value; |
| | debug_return_bool(true); |
| } |
} |
| |
|
| /* |
/* |
|
Line 208 io_nextid(char *iolog_dir, char *iolog_dir_fallback, c
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Line 181 io_nextid(char *iolog_dir, char *iolog_dir_fallback, c
|
| * Open sequence file |
* Open sequence file |
| */ |
*/ |
| len = snprintf(pathbuf, sizeof(pathbuf), "%s/seq", iolog_dir); |
len = snprintf(pathbuf, sizeof(pathbuf), "%s/seq", iolog_dir); |
| if (len <= 0 || len >= sizeof(pathbuf)) { | if (len <= 0 || (size_t)len >= sizeof(pathbuf)) { |
| errno = ENAMETOOLONG; |
errno = ENAMETOOLONG; |
| log_fatal(USE_ERRNO, "%s/seq", pathbuf); |
log_fatal(USE_ERRNO, "%s/seq", pathbuf); |
| } |
} |
|
Line 228 io_nextid(char *iolog_dir, char *iolog_dir_fallback, c
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Line 201 io_nextid(char *iolog_dir, char *iolog_dir_fallback, c
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| |
|
| len = snprintf(fallback, sizeof(fallback), "%s/seq", |
len = snprintf(fallback, sizeof(fallback), "%s/seq", |
| iolog_dir_fallback); |
iolog_dir_fallback); |
| if (len > 0 && len < sizeof(fallback)) { | if (len > 0 && (size_t)len < sizeof(fallback)) { |
| int fd2 = open(fallback, O_RDWR|O_CREAT, S_IRUSR|S_IWUSR); |
int fd2 = open(fallback, O_RDWR|O_CREAT, S_IRUSR|S_IWUSR); |
| if (fd2 != -1) { |
if (fd2 != -1) { |
| nread = read(fd2, buf, sizeof(buf)); | nread = read(fd2, buf, sizeof(buf) - 1); |
| if (nread > 0) { |
if (nread > 0) { |
| |
if (buf[nread - 1] == '\n') |
| |
nread--; |
| |
buf[nread] = '\0'; |
| id = strtoul(buf, &ep, 36); |
id = strtoul(buf, &ep, 36); |
| if (buf == ep || id >= sessid_max) | if (ep == buf || *ep != '\0' || id >= sessid_max) { |
| | sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO, |
| | "%s: bad sequence number: %s", fallback, buf); |
| id = 0; |
id = 0; |
| |
} |
| } |
} |
| close(fd2); |
close(fd2); |
| } |
} |
|
Line 244 io_nextid(char *iolog_dir, char *iolog_dir_fallback, c
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Line 223 io_nextid(char *iolog_dir, char *iolog_dir_fallback, c
|
| |
|
| /* Read current seq number (base 36). */ |
/* Read current seq number (base 36). */ |
| if (id == 0) { |
if (id == 0) { |
| nread = read(fd, buf, sizeof(buf)); | nread = read(fd, buf, sizeof(buf) - 1); |
| if (nread != 0) { |
if (nread != 0) { |
| if (nread == -1) |
if (nread == -1) |
| log_fatal(USE_ERRNO, N_("unable to read %s"), pathbuf); |
log_fatal(USE_ERRNO, N_("unable to read %s"), pathbuf); |
| |
if (buf[nread - 1] == '\n') |
| |
nread--; |
| |
buf[nread] = '\0'; |
| id = strtoul(buf, &ep, 36); |
id = strtoul(buf, &ep, 36); |
| if (buf == ep || id >= sessid_max) | if (ep == buf || *ep != '\0' || id >= sessid_max) { |
| | sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO, |
| | "%s: bad sequence number: %s", pathbuf, buf); |
| id = 0; |
id = 0; |
| |
} |
| } |
} |
| } |
} |
| id++; |
id++; |
|
Line 269 io_nextid(char *iolog_dir, char *iolog_dir_fallback, c
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Line 254 io_nextid(char *iolog_dir, char *iolog_dir_fallback, c
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| memcpy(sessid, buf, 6); |
memcpy(sessid, buf, 6); |
| sessid[6] = '\0'; |
sessid[6] = '\0'; |
| |
|
| /* Rewind and overwrite old seq file. */ | /* Rewind and overwrite old seq file, including the NUL byte. */ |
| if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1 || write(fd, buf, 7) != 7) |
if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1 || write(fd, buf, 7) != 7) |
| log_fatal(USE_ERRNO, N_("unable to write to %s"), pathbuf); |
log_fatal(USE_ERRNO, N_("unable to write to %s"), pathbuf); |
| close(fd); |
close(fd); |
|
Line 320 open_io_fd(char *pathbuf, size_t len, struct io_log_fi
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Line 305 open_io_fd(char *pathbuf, size_t len, struct io_log_fi
|
| pathbuf[len] = '\0'; |
pathbuf[len] = '\0'; |
| strlcat(pathbuf, iol->suffix, PATH_MAX); |
strlcat(pathbuf, iol->suffix, PATH_MAX); |
| if (iol->enabled) { |
if (iol->enabled) { |
| fd = open(pathbuf, O_CREAT|O_WRONLY, S_IRUSR|S_IWUSR); | fd = open(pathbuf, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR); |
| if (fd != -1) { |
if (fd != -1) { |
| fcntl(fd, F_SETFD, FD_CLOEXEC); |
fcntl(fd, F_SETFD, FD_CLOEXEC); |
| #ifdef HAVE_ZLIB_H |
#ifdef HAVE_ZLIB_H |
|
Line 330 open_io_fd(char *pathbuf, size_t len, struct io_log_fi
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Line 315 open_io_fd(char *pathbuf, size_t len, struct io_log_fi
|
| #endif |
#endif |
| iol->fd.f = fdopen(fd, "w"); |
iol->fd.f = fdopen(fd, "w"); |
| } |
} |
| if (fd == -1 || iol->fd.v == NULL) { | if (fd == -1 || iol->fd.v == NULL) |
| log_fatal(USE_ERRNO, N_("unable to create %s"), pathbuf); |
log_fatal(USE_ERRNO, N_("unable to create %s"), pathbuf); |
| if (fd != -1) |
|
| close(fd); |
|
| } |
|
| } else { |
} else { |
| /* Remove old log file if we recycled sequence numbers. */ |
/* Remove old log file if we recycled sequence numbers. */ |
| unlink(pathbuf); |
unlink(pathbuf); |
|
Line 352 iolog_deserialize_info(struct iolog_details *details,
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Line 334 iolog_deserialize_info(struct iolog_details *details,
|
| { |
{ |
| const char *runas_uid_str = "0", *runas_euid_str = NULL; |
const char *runas_uid_str = "0", *runas_euid_str = NULL; |
| const char *runas_gid_str = "0", *runas_egid_str = NULL; |
const char *runas_gid_str = "0", *runas_egid_str = NULL; |
| char id[MAX_UID_T_LEN + 2], *ep; | const char *errstr; |
| | char idbuf[MAX_UID_T_LEN + 2]; |
| char * const *cur; |
char * const *cur; |
| unsigned long ulval; | id_t id; |
| uid_t runas_uid = 0; |
uid_t runas_uid = 0; |
| gid_t runas_gid = 0; |
gid_t runas_gid = 0; |
| debug_decl(iolog_deserialize_info, SUDO_DEBUG_UTIL) |
debug_decl(iolog_deserialize_info, SUDO_DEBUG_UTIL) |
|
Line 366 iolog_deserialize_info(struct iolog_details *details,
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Line 349 iolog_deserialize_info(struct iolog_details *details,
|
| switch (**cur) { |
switch (**cur) { |
| case 'c': |
case 'c': |
| if (strncmp(*cur, "cols=", sizeof("cols=") - 1) == 0) { |
if (strncmp(*cur, "cols=", sizeof("cols=") - 1) == 0) { |
| details->cols = atoi(*cur + sizeof("cols=") - 1); | int n = strtonum(*cur + sizeof("cols=") - 1, 1, INT_MAX, NULL); |
| | if (n > 0) |
| | details->cols = n; |
| continue; |
continue; |
| } |
} |
| if (strncmp(*cur, "cwd=", sizeof("cwd=") - 1) == 0) { |
if (strncmp(*cur, "cwd=", sizeof("cwd=") - 1) == 0) { |
|
Line 376 iolog_deserialize_info(struct iolog_details *details,
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Line 361 iolog_deserialize_info(struct iolog_details *details,
|
| break; |
break; |
| case 'l': |
case 'l': |
| if (strncmp(*cur, "lines=", sizeof("lines=") - 1) == 0) { |
if (strncmp(*cur, "lines=", sizeof("lines=") - 1) == 0) { |
| details->lines = atoi(*cur + sizeof("lines=") - 1); | int n = strtonum(*cur + sizeof("lines=") - 1, 1, INT_MAX, NULL); |
| | if (n > 0) |
| | details->lines = n; |
| continue; |
continue; |
| } |
} |
| break; |
break; |
|
Line 470 iolog_deserialize_info(struct iolog_details *details,
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Line 457 iolog_deserialize_info(struct iolog_details *details,
|
| if (runas_euid_str != NULL) |
if (runas_euid_str != NULL) |
| runas_uid_str = runas_euid_str; |
runas_uid_str = runas_euid_str; |
| if (runas_uid_str != NULL) { |
if (runas_uid_str != NULL) { |
| errno = 0; | id = atoid(runas_uid_str, NULL, NULL, &errstr); |
| ulval = strtoul(runas_uid_str, &ep, 0); | if (errstr != NULL) |
| if (*runas_uid_str != '\0' && *ep == '\0' && | warningx("runas uid %s: %s", runas_uid_str, U_(errstr)); |
| (errno != ERANGE || ulval != ULONG_MAX)) { | else |
| runas_uid = (uid_t)ulval; | runas_uid = (uid_t)id; |
| } | |
| } |
} |
| if (runas_egid_str != NULL) |
if (runas_egid_str != NULL) |
| runas_gid_str = runas_egid_str; |
runas_gid_str = runas_egid_str; |
| if (runas_gid_str != NULL) { |
if (runas_gid_str != NULL) { |
| errno = 0; | id = atoid(runas_gid_str, NULL, NULL, &errstr); |
| ulval = strtoul(runas_gid_str, &ep, 0); | if (errstr != NULL) |
| if (*runas_gid_str != '\0' && *ep == '\0' && | warningx("runas gid %s: %s", runas_gid_str, U_(errstr)); |
| (errno != ERANGE || ulval != ULONG_MAX)) { | else |
| runas_gid = (gid_t)ulval; | runas_gid = (gid_t)id; |
| } | |
| } |
} |
| |
|
| details->runas_pw = sudo_getpwuid(runas_uid); |
details->runas_pw = sudo_getpwuid(runas_uid); |
| if (details->runas_pw == NULL) { |
if (details->runas_pw == NULL) { |
| id[0] = '#'; | idbuf[0] = '#'; |
| strlcpy(&id[1], runas_uid_str, sizeof(id) - 1); | strlcpy(&idbuf[1], runas_uid_str, sizeof(idbuf) - 1); |
| details->runas_pw = sudo_fakepwnam(id, runas_gid); | details->runas_pw = sudo_fakepwnam(idbuf, runas_gid); |
| } |
} |
| |
|
| if (runas_gid != details->runas_pw->pw_gid) { |
if (runas_gid != details->runas_pw->pw_gid) { |
| details->runas_gr = sudo_getgrgid(runas_gid); |
details->runas_gr = sudo_getgrgid(runas_gid); |
| if (details->runas_gr == NULL) { |
if (details->runas_gr == NULL) { |
| id[0] = '#'; | idbuf[0] = '#'; |
| strlcpy(&id[1], runas_gid_str, sizeof(id) - 1); | strlcpy(&idbuf[1], runas_gid_str, sizeof(idbuf) - 1); |
| details->runas_gr = sudo_fakegrnam(id); | details->runas_gr = sudo_fakegrnam(idbuf); |
| } |
} |
| } |
} |
| debug_return_bool( |
debug_return_bool( |
|
Line 509 iolog_deserialize_info(struct iolog_details *details,
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Line 494 iolog_deserialize_info(struct iolog_details *details,
|
| io_log_files[IOFD_TTYOUT].enabled); |
io_log_files[IOFD_TTYOUT].enabled); |
| } |
} |
| |
|
| |
/* |
| |
* Write the "/log" file that contains the user and command info. |
| |
*/ |
| |
void |
| |
write_info_log(char *pathbuf, size_t len, struct iolog_details *details, |
| |
char * const argv[], struct timeval *now) |
| |
{ |
| |
char * const *av; |
| |
FILE *fp; |
| |
int fd; |
| |
|
| |
pathbuf[len] = '\0'; |
| |
strlcat(pathbuf, "/log", PATH_MAX); |
| |
fd = open(pathbuf, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR); |
| |
if (fd == -1 || (fp = fdopen(fd, "w")) == NULL) |
| |
log_fatal(USE_ERRNO, N_("unable to create %s"), pathbuf); |
| |
|
| |
fprintf(fp, "%lld:%s:%s:%s:%s:%d:%d\n%s\n%s", (long long)now->tv_sec, |
| |
details->user ? details->user : "unknown", details->runas_pw->pw_name, |
| |
details->runas_gr ? details->runas_gr->gr_name : "", |
| |
details->tty ? details->tty : "unknown", details->lines, details->cols, |
| |
details->cwd ? details->cwd : "unknown", |
| |
details->command ? details->command : "unknown"); |
| |
for (av = argv + 1; *av != NULL; av++) { |
| |
fputc(' ', fp); |
| |
fputs(*av, fp); |
| |
} |
| |
fputc('\n', fp); |
| |
fclose(fp); |
| |
} |
| |
|
| static int |
static int |
| sudoers_io_open(unsigned int version, sudo_conv_t conversation, |
sudoers_io_open(unsigned int version, sudo_conv_t conversation, |
| sudo_printf_t plugin_printf, char * const settings[], |
sudo_printf_t plugin_printf, char * const settings[], |
|
Line 582 sudoers_io_open(unsigned int version, sudo_conv_t conv
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Line 598 sudoers_io_open(unsigned int version, sudo_conv_t conv
|
| if (len >= sizeof(pathbuf)) |
if (len >= sizeof(pathbuf)) |
| goto done; |
goto done; |
| |
|
| /* | /* Write log file with user and command details. */ |
| * We create 7 files: a log file, a timing file and 5 for input/output. | |
| */ | |
| for (i = 0; i < IOFD_MAX; i++) { | |
| open_io_fd(pathbuf, len, &io_log_files[i], i ? iolog_compress : false); | |
| } | |
| |
| gettimeofday(&last_time, NULL); |
gettimeofday(&last_time, NULL); |
| fprintf(io_log_files[IOFD_LOG].fd.f, "%lld:%s:%s:%s:%s:%d:%d\n%s\n%s", | write_info_log(pathbuf, len, &details, argv, &last_time); |
| (long long)last_time.tv_sec, | |
| details.user ? details.user : "unknown", details.runas_pw->pw_name, | |
| details.runas_gr ? details.runas_gr->gr_name : "", | |
| details.tty ? details.tty : "unknown", details.lines, details.cols, | |
| details.cwd ? details.cwd : "unknown", | |
| details.command ? details.command : "unknown"); | |
| for (cur = &argv[1]; *cur != NULL; cur++) { | |
| fputc(' ', io_log_files[IOFD_LOG].fd.f); | |
| fputs(*cur, io_log_files[IOFD_LOG].fd.f); | |
| } | |
| fputc('\n', io_log_files[IOFD_LOG].fd.f); | |
| fclose(io_log_files[IOFD_LOG].fd.f); | |
| io_log_files[IOFD_LOG].fd.f = NULL; | |
| |
|
| |
/* Create the timing and I/O log files. */ |
| |
for (i = 0; i < IOFD_MAX; i++) |
| |
open_io_fd(pathbuf, len, &io_log_files[i], iolog_compress); |
| |
|
| /* |
/* |
| * Clear I/O log function pointers for disabled log functions. |
* Clear I/O log function pointers for disabled log functions. |
| */ |
*/ |
|
Line 699 sudoers_io_log(const char *buf, unsigned int len, int
|
Line 700 sudoers_io_log(const char *buf, unsigned int len, int
|
| else |
else |
| #endif |
#endif |
| ignore_result(fwrite(buf, 1, len, io_log_files[idx].fd.f)); |
ignore_result(fwrite(buf, 1, len, io_log_files[idx].fd.f)); |
| delay.tv_sec = now.tv_sec; | sudo_timevalsub(&now, &last_time, &delay); |
| delay.tv_usec = now.tv_usec; | |
| timevalsub(&delay, &last_time); | |
| #ifdef HAVE_ZLIB_H |
#ifdef HAVE_ZLIB_H |
| if (iolog_compress) |
if (iolog_compress) |
| gzprintf(io_log_files[IOFD_TIMING].fd.g, "%d %f %d\n", idx, | gzprintf(io_log_files[IOFD_TIMING].fd.g, "%d %f %u\n", idx, |
| delay.tv_sec + ((double)delay.tv_usec / 1000000), len); |
delay.tv_sec + ((double)delay.tv_usec / 1000000), len); |
| else |
else |
| #endif |
#endif |
| fprintf(io_log_files[IOFD_TIMING].fd.f, "%d %f %d\n", idx, | fprintf(io_log_files[IOFD_TIMING].fd.f, "%d %f %u\n", idx, |
| delay.tv_sec + ((double)delay.tv_usec / 1000000), len); |
delay.tv_sec + ((double)delay.tv_usec / 1000000), len); |
| last_time.tv_sec = now.tv_sec; |
last_time.tv_sec = now.tv_sec; |
| last_time.tv_usec = now.tv_usec; |
last_time.tv_usec = now.tv_usec; |