-/* @(#) $Id: ./src/rootcheck/os_string.c, 2011/09/08 dcid Exp $
- */
-
-/* Included and modified strings.c from the OpenBSD project.
- * Copyright bellow.
- */
+/* Included and modified strings.c from the OpenBSD project */
/*
* Copyright (c) 1980, 1987, 1993
- * The Regents of the University of California. All rights reserved.
+ * The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* SUCH DAMAGE.
*/
-
#ifndef WIN32
#include <sys/types.h>
#include <string.h>
#include <locale.h>
#include <unistd.h>
-
#include <netinet/in.h>
-
-/* Again, making solaris happy... */
#ifdef SOLARIS
#include <sys/exechdr.h>
-
#elif defined Darwin || defined HPUX
/* For some reason darwin does not have that */
-struct exec
-{
- unsigned long a_info; /* Use macros N_MAGIC, etc for access */
- unsigned char a_machtype; /* machine type */
- unsigned short a_magic; /* magic number */
- unsigned a_text; /* length of text, in bytes */
- unsigned a_data; /* length of data, in bytes */
- unsigned a_bss; /* length of uninitialized data area for file, in bytes */
- unsigned a_syms; /* length of symbol table data in file, in bytes */
- unsigned a_entry; /* start address */
- unsigned a_trsize; /* length of relocation info for text, in bytes */
- unsigned a_drsize; /* length of relocation info for data, in bytes */
+struct exec {
+ unsigned long a_info; /* Use macros N_MAGIC, etc for access */
+ unsigned char a_machtype; /* machine type */
+ unsigned short a_magic; /* magic number */
+ unsigned a_text; /* length of text, in bytes */
+ unsigned a_data; /* length of data, in bytes */
+ unsigned a_bss; /* length of uninitialized data area for file, in bytes */
+ unsigned a_syms; /* length of symbol table data in file, in bytes */
+ unsigned a_entry; /* start address */
+ unsigned a_trsize; /* length of relocation info for text, in bytes */
+ unsigned a_drsize; /* length of relocation info for data, in bytes */
};
-#define OMAGIC 0407 /* Object file or impure executable. */
-#define NMAGIC 0410 /* Code indicating pure executable. */
-#define ZMAGIC 0413 /* Code indicating demand-paged executable. */
-#define BMAGIC 0415 /* Used by a b.out object. */
-#define M_OLDSUN2 0
-#else
+#define OMAGIC 0407 /* Object file or impure executable */
+#define NMAGIC 0410 /* Code indicating pure executable */
+#define ZMAGIC 0413 /* Code indicating demand-paged executable */
+#define BMAGIC 0415 /* Used by a b.out object */
+#define M_OLDSUN2 0
+#else
#include <a.out.h>
#endif
-
#ifndef PAGSIZ
#define PAGSIZ 0x02000
#endif
#endif /* N_TXTOFF */
-
#include "headers/defs.h"
#include "headers/debug_op.h"
#include "headers/regex_op.h"
#include "error_messages/error_messages.h"
-#define STR_MINLEN 4 /* Minumum length for a string */
-
-#define ISSTR(ch) (isascii(ch) && (isprint(ch) || ch == '\t'))
+#define STR_MINLEN 4 /* Minimum length for a string */
+#define ISSTR(ch) (isascii(ch) && (isprint(ch) || ch == '\t'))
#ifdef AIX
typedef struct aouthdr EXEC;
typedef struct exec EXEC;
#endif
-typedef struct _os_strings
-{
+typedef struct _os_strings {
int head_len;
int read_len;
int hcnt;
long foff;
unsigned char hbfr[sizeof(EXEC)];
FILE *fp;
-}os_strings;
+} os_strings;
-
-/* os_getch: Read each character from a binary file */
+/* Read each character from a binary file */
int os_getch(os_strings *oss);
-/* os_strings: List the strings of a binary and
- * check if the regex given is there.
- */
+/* List the strings of a binary and check if the regex given is there */
int os_string(char *file, char *regex)
{
int ch, cnt;
-
unsigned char *C;
unsigned char *bfr;
-
- char line[OS_SIZE_1024 +1];
+ char line[OS_SIZE_1024 + 1];
char *buf;
-
EXEC *head;
-
os_strings oss;
/* Return didn't match */
- if(!file || !regex)
- {
- return(0);
+ if (!file || !regex) {
+ return (0);
}
-
- /* Allocating for the buffer */
- bfr = calloc(STR_MINLEN + 2, sizeof(char *));
- if (!bfr)
- {
- merror(MEM_ERROR, ARGV0);
- return(0);
+ /* Allocate the buffer */
+ bfr = (unsigned char *) calloc(STR_MINLEN + 2, sizeof(unsigned char));
+ if (!bfr) {
+ merror(MEM_ERROR, ARGV0, errno, strerror(errno));
+ return (0);
}
- /* Opening the file */
+ /* Open the file */
oss.fp = fopen(file, "r");
- if(!oss.fp)
- {
+ if (!oss.fp) {
free(bfr);
- return(0);
+ return (0);
}
- /* cleaning the line */
- memset(line, '\0', OS_SIZE_1024 +1);
+ /* Clean the line */
+ memset(line, '\0', OS_SIZE_1024 + 1);
- /* starting .. (from old strings.c) */
+ /* Start (from old strings.c) */
oss.foff = 0;
oss.head_len = 0;
-
oss.read_len = -1;
head = (EXEC *)oss.hbfr;
-
- if ((oss.head_len = read(fileno(oss.fp), head, sizeof(EXEC))) == -1)
- {
+ if ((oss.head_len = read(fileno(oss.fp), head, sizeof(EXEC))) == -1) {
oss.head_len = 0;
oss.read_len = -1;
- }
- else if (oss.head_len == sizeof(EXEC) && !N_BADMAG(*head))
- {
+ } else if (oss.head_len == sizeof(EXEC) && !N_BADMAG(*head)) {
oss.foff = N_TXTOFF(*head);
- if (fseek(stdin, oss.foff, SEEK_SET) == -1)
- {
+ if (fseek(stdin, oss.foff, SEEK_SET) == -1) {
oss.read_len = -1;
- }
- else
- {
- #ifdef AIX
+ } else {
+#ifdef AIX
oss.read_len = head->tsize + head->dsize;
- #else
+#else
oss.read_len = head->a_text + head->a_data;
- #endif
+#endif
}
oss.head_len = 0;
- }
- else
- {
+ } else {
oss.hcnt = 0;
}
/* Read the file and perform the regex comparison */
- for (cnt = 0; (ch = os_getch(&oss)) != EOF;)
- {
- if (ISSTR(ch))
- {
- if (!cnt)
+ for (cnt = 0, C = bfr; (ch = os_getch(&oss)) != EOF;) {
+ if (ISSTR(ch)) {
+ if (!cnt) {
C = bfr;
+ }
*C++ = ch;
- if (++cnt < STR_MINLEN)
+ if (++cnt < STR_MINLEN) {
continue;
+ }
- strncpy(line, (char *)bfr, STR_MINLEN +1);
+ strncpy(line, (char *)bfr, STR_MINLEN + 1);
buf = line;
- buf+=strlen(line);
-
+ buf += strlen(line);
- while ((ch = os_getch(&oss)) != EOF && ISSTR(ch))
- {
- if(cnt < OS_SIZE_1024)
- {
+ while ((ch = os_getch(&oss)) != EOF && ISSTR(ch)) {
+ if (cnt < OS_SIZE_1024) {
*buf = (char)ch;
buf++;
- }
- else
- {
+ } else {
*buf = '\0';
break;
}
- cnt++;
+ cnt++;
}
*buf = '\0';
- if(OS_PRegex(line, regex))
- {
- if(oss.fp)
+ if (OS_PRegex(line, regex)) {
+ if (oss.fp) {
fclose(oss.fp);
+ }
free(bfr);
- return(1);
+ return (1);
}
}
cnt = 0;
}
- if(oss.fp)
+ if (oss.fp) {
fclose(oss.fp);
+ }
free(bfr);
- return(0);
+ return (0);
}
-
-/*
- * getch (os_getch, modified)--
- * get next character from wherever
- */
+/* Get next character from wherever */
int os_getch(os_strings *oss)
{
- ++oss->foff;
- if (oss->head_len)
- {
- if (oss->hcnt < oss->head_len)
- return((int)oss->hbfr[oss->hcnt++]);
- oss->head_len = 0;
- }
- if (oss->read_len == -1 || oss->read_len-- > 0)
- {
- return(fgetc(oss->fp));
+ ++oss->foff;
+ if (oss->head_len) {
+ if (oss->hcnt < oss->head_len) {
+ return ((int)oss->hbfr[oss->hcnt++]);
+ }
+ oss->head_len = 0;
+ }
+ if (oss->read_len == -1 || oss->read_len-- > 0) {
+ return (fgetc(oss->fp));
}
- return(EOF);
+ return (EOF);
}
-/* EOF */
#else
-int os_string(char *file, char *regex)
+int os_string(__attribute__((unused)) char *file, __attribute__((unused)) char *regex)
{
- return(0);
+ return (0);
}
#endif
+
projects / ossec-hids.git / blobdiff