The Tor Browser: security/nss/coreconf/mkdepend/main.c@b8a032363ba2 (annotated)

security/nss/coreconf/mkdepend/main.c@b8a032363ba2 (annotated)

security/nss/coreconf/mkdepend/main.c

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* $Xorg: main.c,v 1.5 2001/02/09 02:03:16 xorgcvs Exp $ */
 /*
 Copyright (c) 1993, 1994, 1998 The Open Group
 Permission to use, copy, modify, distribute, and sell this software and its
 documentation for any purpose is hereby granted without fee, provided that
 the above copyright notice appear in all copies and that both that
 copyright notice and this permission notice appear in supporting
 documentation.
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 Except as contained in this notice, the name of The Open Group shall not be
 used in advertising or otherwise to promote the sale, use or other dealings
 in this Software without prior written authorization from The Open Group.
 */
 /* $XFree86: xc/config/makedepend/main.c,v 3.32 2003/03/26 20:43:48 tsi Exp $ */
 #include "def.h"
 #ifdef hpux
 #define sigvec sigvector
 #endif /* hpux */
 #ifdef X_POSIX_C_SOURCE
 #define _POSIX_C_SOURCE X_POSIX_C_SOURCE
 #include <signal.h>
 #undef _POSIX_C_SOURCE
 #else
 #if defined(X_NOT_POSIX) || defined(_POSIX_SOURCE)
 #include <signal.h>
 #else
 #define _POSIX_SOURCE
 #include <signal.h>
 #undef _POSIX_SOURCE
 #endif
 #endif
 #include <stdarg.h>
 #ifdef _WIN32
 #include <io.h>
 #endif
 #ifdef MINIX
 #define USE_CHMOD	1
 #endif
 #ifdef DEBUG
 int	_debugmask;
 #endif
 /* #define DEBUG_DUMP */
 #ifdef DEBUG_DUMP
 #define DBG_PRINT(file, fmt, args)   fprintf(file, fmt, args)
 #else
 #define DBG_PRINT(file, fmt, args)   /* empty */
 #endif
 #define DASH_INC_PRE    "#include \""
 #define DASH_INC_POST   "\""
 char *ProgramName;
 char	*directives[] = {
 	"if",
 	"ifdef",
 	"ifndef",
 	"else",
 	"endif",
 	"define",
 	"undef",
 	"include",
 	"line",
 	"pragma",
 	"error",
 	"ident",
 	"sccs",
 	"elif",
 	"eject",
 	"warning",
 	"include_next",
 	NULL
 };
 #define MAKEDEPEND
 #include "imakemdep.h"	/* from config sources */
 #undef MAKEDEPEND
 struct	inclist inclist[ MAXFILES ],
 		*inclistp = inclist,
 		*inclistnext = inclist,
 		maininclist;
 static char	*filelist[ MAXFILES ];
 char		*includedirs[ MAXDIRS + 1 ],
 		**includedirsnext = includedirs;
 char		*notdotdot[ MAXDIRS ];
 static int	cmdinc_count = 0;
 static char	*cmdinc_list[ 2 * MAXINCFILES ];
 char		*objprefix = "";
 char		*objsuffix = OBJSUFFIX;
 static char	*startat = "# DO NOT DELETE";
 int		width = 78;
 static boolean	append = FALSE;
 boolean		printed = FALSE;
 boolean		verbose = FALSE;
 boolean		show_where_not = FALSE;
 /* Warn on multiple includes of same file */
 boolean 	warn_multiple = FALSE;
 static void setfile_cmdinc(struct filepointer *filep, long count, char **list);
 static void redirect(char *line, char *makefile);
 static
 #ifdef SIGNALRETURNSINT
 int
 #else
 void
 #endif
 catch (int sig)
 {
 	fflush (stdout);
 	fatalerr ("got signal %d\n", sig);
 }
 #if defined(USG) || (defined(i386) && defined(SYSV)) || defined(WIN32) || defined(__UNIXOS2__) || defined(Lynx_22) || defined(__CYGWIN__)
 #define USGISH
 #endif
 #ifndef USGISH
 #ifdef X_NOT_POSIX
 #define sigaction sigvec
 #define sa_handler sv_handler
 #define sa_mask sv_mask
 #define sa_flags sv_flags
 #endif
 struct sigaction sig_act;
 #endif /* USGISH */
 int
 main(int argc, char *argv[])
 {
 	char	**fp = filelist;
 	char	**incp = includedirs;
 	char	*p;
 	struct inclist	*ip;
 	char	*makefile = NULL;
 	struct filepointer	*filecontent;
 	struct symtab *psymp = predefs;
 	char *endmarker = NULL;
 	char *defincdir = NULL;
 	char **undeflist = NULL;
 	int numundefs = 0, i;
 	register char offset;
 	ProgramName = argv[0];
 	while (psymp->s_name)
 	{
 	    define2(psymp->s_name, psymp->s_value, &maininclist);
 	    psymp++;
 	}
 	if (argc == 2 && argv[1][0] == '@') {
 	    struct stat ast;
 	    int afd;
 	    char *args;
 	    char **nargv;
 	    int nargc;
 	    char quotechar = '\0';
 	    nargc = 1;
 	    if ((afd = open(argv[1]+1, O_RDONLY)) < 0)
 		fatalerr("cannot open \"%s\"\n", argv[1]+1);
 	    fstat(afd, &ast);
 	    args = (char *)malloc(ast.st_size + 1);
 	    if ((ast.st_size = read(afd, args, ast.st_size)) < 0)
 		fatalerr("failed to read %s\n", argv[1]+1);
 	    args[ast.st_size] = '\0';
 	    close(afd);
 	    for (p = args; *p; p++) {
 		if (quotechar) {
 		    if (quotechar == '\\' ||
 			(*p == quotechar && p[-1] != '\\'))
 			quotechar = '\0';
 		    continue;
 		}
 		switch (*p) {
 		case '\\':
 		case '"':
 		case '\'':
 		    quotechar = *p;
 		    break;
 		case ' ':
 		case '\n':
 		    *p = '\0';
 		    if (p > args && p[-1])
 			nargc++;
 		    break;
 		}
 	    }
 	    if (p[-1])
 		nargc++;
 	    nargv = (char **)malloc(nargc * sizeof(char *));
 	    nargv[0] = argv[0];
 	    argc = 1;
 	    for (p = args; argc < nargc; p += strlen(p) + 1)
 		if (*p) nargv[argc++] = p;
 	    argv = nargv;
 	}
 	for(argc--, argv++; argc; argc--, argv++) {
 	    	/* if looking for endmarker then check before parsing */
 		if (endmarker && strcmp (endmarker, *argv) == 0) {
 		    endmarker = NULL;
 		    continue;
 		}
 		if (**argv != '-') {
 			/* treat +thing as an option for C++ */
 			if (endmarker && **argv == '+')
 				continue;
 			*fp++ = argv[0];
 			continue;
 		}
 		switch(argv[0][1]) {
 		case '-':
 			endmarker = &argv[0][2];
 			if (endmarker[0] == '\0') endmarker = "--";
 			break;
 		case 'D':
 			offset = 2;
 			if (argv[0][2] == '\0') {
 				argv++;
 				argc--;
 				offset = 0;
 			}
 			/* offset +1 here since first def letter
 			 * cannot be `=`
 			 */
 			for (p = argv[0] + offset + 1; *p; p++)
 				if (*p == '=') {
 					*p = ' ';
 					break;
 				}
 			define(argv[0] + offset, &maininclist);
 			break;
 		case 'I':
 			if (incp >= includedirs + MAXDIRS)
 			    fatalerr("Too many -I flags.\n");
 			*incp++ = argv[0]+2;
 			if (**(incp-1) == '\0') {
 				*(incp-1) = *(++argv);
 				argc--;
 			}
 			break;
 		case 'U':
 			/* Undef's override all -D's so save them up */
 			numundefs++;
 			if (numundefs == 1)
 			    undeflist = malloc(sizeof(char *));
 			else
 			    undeflist = realloc(undeflist,
 						numundefs * sizeof(char *));
 			offset = 2;
 			if (argv[0][2] == '\0') {
 				argv++;
 				argc--;
 				offset = 0;
 			}
 			undeflist[numundefs - 1] = argv[0] + offset;
 			break;
 		case 'Y':
 			defincdir = argv[0]+2;
 			break;
 		/* do not use if endmarker processing */
 		case 'a':
 			if (endmarker) break;
 			append = TRUE;
 			break;
 		case 'w':
 			if (endmarker) break;
 			if (argv[0][2] == '\0') {
 				argv++;
 				argc--;
 				width = atoi(argv[0]);
 			} else
 				width = atoi(argv[0]+2);
 			break;
 		case 'o':
 			if (endmarker) break;
 			if (argv[0][2] == '\0') {
 				argv++;
 				argc--;
 				objsuffix = argv[0];
 			} else
 				objsuffix = argv[0]+2;
 			break;
 		case 'p':
 			if (endmarker) break;
 			if (argv[0][2] == '\0') {
 				argv++;
 				argc--;
 				objprefix = argv[0];
 			} else
 				objprefix = argv[0]+2;
 			break;
 		case 'v':
 			if (endmarker) break;
 			verbose = TRUE;
 #ifdef DEBUG
 			if (argv[0][2])
 				_debugmask = atoi(argv[0]+2);
 #endif
 			break;
 		case 's':
 			if (endmarker) break;
 			startat = argv[0]+2;
 			if (*startat == '\0') {
 				startat = *(++argv);
 				argc--;
 			}
 			if (*startat != '#')
 				fatalerr("-s flag's value should start %s\n",
 					"with '#'.");
 			break;
 		case 'f':
 			if (endmarker) break;
 			makefile = argv[0]+2;
 			if (*makefile == '\0') {
 				makefile = *(++argv);
 				argc--;
 			}
 			break;
 		case 'm':
 			warn_multiple = TRUE;
 			break;
 		/* Ignore -O, -g so we can just pass ${CFLAGS} to
 		   makedepend
 		 */
 		case 'O':
 		case 'g':
 			break;
 		case 'i':
 			if (strcmp(&argv[0][1],"include") == 0) {
 				char *buf;
 				if (argc<2)
 					fatalerr("option -include is a "
 						 "missing its parameter\n");
 				if (cmdinc_count >= MAXINCFILES)
 					fatalerr("Too many -include flags.\n");
 				argc--;
 				argv++;
 				buf = malloc(strlen(DASH_INC_PRE) +
 					     strlen(argv[0]) +
 					     strlen(DASH_INC_POST) + 1);
                 		if(!buf)
 					fatalerr("out of memory at "
 						 "-include string\n");
 				cmdinc_list[2 * cmdinc_count + 0] = argv[0];
 				cmdinc_list[2 * cmdinc_count + 1] = buf;
 				cmdinc_count++;
 				break;
 			}
 			/* intentional fall through */
 		default:
 			if (endmarker) break;
 	/*		fatalerr("unknown opt = %s\n", argv[0]); */
 			warning("ignoring option %s\n", argv[0]);
 		}
 	}
 	/* Now do the undefs from the command line */
 	for (i = 0; i < numundefs; i++)
 	    undefine(undeflist[i], &maininclist);
 	if (numundefs > 0)
 	    free(undeflist);
 	if (!defincdir) {
 #ifdef PREINCDIR
 	    if (incp >= includedirs + MAXDIRS)
 		fatalerr("Too many -I flags.\n");
 	    *incp++ = PREINCDIR;
 #endif
 #if defined(__UNIXOS2__) || defined(_MSC_VER)
 	    {
 #if defined(_MSC_VER)
 		char *includepath = getenv("INCLUDE");
 #else
 		char *includepath = getenv("C_INCLUDE_PATH");
 #endif
 		/* can have more than one component */
 		if (includepath) {
 		    char *beg, *end;
 		    beg= (char*)strdup(includepath);
 		    for (;;) {
 			end = (char*)strchr(beg,';');
 			if (end) *end = 0;
 		    	if (incp >= includedirs + MAXDIRS)
 				fatalerr("Too many include dirs\n");
 			*incp++ = beg;
 			if (!end) break;
 			beg = end+1;
 		    }
 		}
 	    }
 #else /* !__UNIXOS2__ && !_MSC_VER, does not use INCLUDEDIR at all */
 	    if (incp >= includedirs + MAXDIRS)
 		fatalerr("Too many -I flags.\n");
 	    *incp++ = INCLUDEDIR;
 #endif
 #ifdef EXTRAINCDIR
 	    if (incp >= includedirs + MAXDIRS)
 		fatalerr("Too many -I flags.\n");
 	    *incp++ = EXTRAINCDIR;
 #endif
 #ifdef POSTINCDIR
 	    if (incp >= includedirs + MAXDIRS)
 		fatalerr("Too many -I flags.\n");
 	    *incp++ = POSTINCDIR;
 #endif
 	} else if (*defincdir) {
 	    if (incp >= includedirs + MAXDIRS)
 		fatalerr("Too many -I flags.\n");
 	    *incp++ = defincdir;
 	}
 	redirect(startat, makefile);
 	/*
 	 * catch signals.
 	 */
 #ifdef USGISH
 /*  should really reset SIGINT to SIG_IGN if it was.  */
 #ifdef SIGHUP
 	signal (SIGHUP, catch);
 #endif
 	signal (SIGINT, catch);
 #ifdef SIGQUIT
 	signal (SIGQUIT, catch);
 #endif
 	signal (SIGILL, catch);
 #ifdef SIGBUS
 	signal (SIGBUS, catch);
 #endif
 	signal (SIGSEGV, catch);
 #ifdef SIGSYS
 	signal (SIGSYS, catch);
 #endif
 #else
 	sig_act.sa_handler = catch;
 #if defined(_POSIX_SOURCE) || !defined(X_NOT_POSIX)
 	sigemptyset(&sig_act.sa_mask);
 	sigaddset(&sig_act.sa_mask, SIGINT);
 	sigaddset(&sig_act.sa_mask, SIGQUIT);
 #ifdef SIGBUS
 	sigaddset(&sig_act.sa_mask, SIGBUS);
 #endif
 	sigaddset(&sig_act.sa_mask, SIGILL);
 	sigaddset(&sig_act.sa_mask, SIGSEGV);
 	sigaddset(&sig_act.sa_mask, SIGHUP);
 	sigaddset(&sig_act.sa_mask, SIGPIPE);
 #ifdef SIGSYS
 	sigaddset(&sig_act.sa_mask, SIGSYS);
 #endif
 #else
 	sig_act.sa_mask = ((1<<(SIGINT -1))
 			   |(1<<(SIGQUIT-1))
 #ifdef SIGBUS
 			   |(1<<(SIGBUS-1))
 #endif
 			   |(1<<(SIGILL-1))
 			   |(1<<(SIGSEGV-1))
 			   |(1<<(SIGHUP-1))
 			   |(1<<(SIGPIPE-1))
 #ifdef SIGSYS
 			   |(1<<(SIGSYS-1))
 #endif
 			   );
 #endif /* _POSIX_SOURCE */
 	sig_act.sa_flags = 0;
 	sigaction(SIGHUP, &sig_act, (struct sigaction *)0);
 	sigaction(SIGINT, &sig_act, (struct sigaction *)0);
 	sigaction(SIGQUIT, &sig_act, (struct sigaction *)0);
 	sigaction(SIGILL, &sig_act, (struct sigaction *)0);
 #ifdef SIGBUS
 	sigaction(SIGBUS, &sig_act, (struct sigaction *)0);
 #endif
 	sigaction(SIGSEGV, &sig_act, (struct sigaction *)0);
 #ifdef SIGSYS
 	sigaction(SIGSYS, &sig_act, (struct sigaction *)0);
 #endif
 #endif /* USGISH */
 	/*
 	 * now peruse through the list of files.
 	 */
 	for(fp=filelist; *fp; fp++) {
 		DBG_PRINT(stderr,"file: %s\n",*fp);
 		filecontent = getfile(*fp);
 		setfile_cmdinc(filecontent, cmdinc_count, cmdinc_list);
 		ip = newinclude(*fp, (char *)NULL);
 		find_includes(filecontent, ip, ip, 0, FALSE);
 		freefile(filecontent);
 		recursive_pr_include(ip, ip->i_file, base_name(*fp));
 		inc_clean();
 	}
 	if (printed)
 		printf("\n");
 	return 0;
 }
 #ifdef __UNIXOS2__
 /*
  * eliminate \r chars from file
  */
 static int
 elim_cr(char *buf, int sz)
 {
 	int i,wp;
 	for (i= wp = 0; i<sz; i++) {
 		if (buf[i] != '\r')
 			buf[wp++] = buf[i];
 	}
 	return wp;
 }
 #endif
 struct filepointer *
 getfile(char *file)
 {
 	int	fd;
 	struct filepointer	*content;
 	struct stat	st;
 	content = (struct filepointer *)malloc(sizeof(struct filepointer));
 	content->f_name = file;
 	if ((fd = open(file, O_RDONLY)) < 0) {
 		warning("cannot open \"%s\"\n", file);
 		content->f_p = content->f_base = content->f_end = (char *)malloc(1);
 		*content->f_p = '\0';
 		return(content);
 	}
 	fstat(fd, &st);
 	content->f_base = (char *)malloc(st.st_size+1);
 	if (content->f_base == NULL)
 		fatalerr("cannot allocate mem\n");
 	if ((st.st_size = read(fd, content->f_base, st.st_size)) < 0)
 		fatalerr("failed to read %s\n", file);
 #ifdef __UNIXOS2__
 	st.st_size = elim_cr(content->f_base,st.st_size);
 #endif
 	close(fd);
 	content->f_len = st.st_size+1;
 	content->f_p = content->f_base;
 	content->f_end = content->f_base + st.st_size;
 	*content->f_end = '\0';
 	content->f_line = 0;
 	content->cmdinc_count = 0;
 	content->cmdinc_list = NULL;
 	content->cmdinc_line = 0;
 	return(content);
 }
 void
 setfile_cmdinc(struct filepointer* filep, long count, char** list)
 {
 	filep->cmdinc_count = count;
 	filep->cmdinc_list = list;
 	filep->cmdinc_line = 0;
 }
 void
 freefile(struct filepointer *fp)
 {
 	free(fp->f_base);
 	free(fp);
 }
 char *copy(char *str)
 {
 	char	*p = (char *)malloc(strlen(str) + 1);
 	strcpy(p, str);
 	return(p);
 }
 int
 match(char *str, char **list)
 {
 	int	i;
 	for (i=0; *list; i++, list++)
 		if (strcmp(str, *list) == 0)
 			return(i);
 	return(-1);
 }
 /*
  * Get the next line.  We only return lines beginning with '#' since that
  * is all this program is ever interested in.
  */
 char *getnextline(struct filepointer *filep)
 {
 	char	*p,	/* walking pointer */
 		*eof,	/* end of file pointer */
 		*bol;	/* beginning of line pointer */
 	int	lineno;	/* line number */
 	boolean whitespace = FALSE;
 	/*
 	 * Fake the "-include" line files in form of #include to the
 	 * start of each file.
 	 */
 	if (filep->cmdinc_line < filep->cmdinc_count) {
 		char *inc = filep->cmdinc_list[2 * filep->cmdinc_line + 0];
 		char *buf = filep->cmdinc_list[2 * filep->cmdinc_line + 1];
 		filep->cmdinc_line++;
 		sprintf(buf,"%s%s%s",DASH_INC_PRE,inc,DASH_INC_POST);
 		DBG_PRINT(stderr,"%s\n",buf);
 		return(buf);
 	}
 	p = filep->f_p;
 	eof = filep->f_end;
 	if (p >= eof)
 		return((char *)NULL);
 	lineno = filep->f_line;
 	for (bol = p--; ++p < eof; ) {
 		if ((bol == p) && ((*p == ' ') || (*p == '\t')))
 		{
 			/* Consume leading white-spaces for this line */
 			while (((p+1) < eof) && ((*p == ' ') || (*p == '\t')))
 			{
 				p++;
 				bol++;
 			}
 			whitespace = TRUE;
 		}
 		if (*p == '/' && (p+1) < eof && *(p+1) == '*') {
 			/* Consume C comments */
 			*(p++) = ' ';
 			*(p++) = ' ';
 			while (p < eof && *p) {
 				if (*p == '*' && (p+1) < eof && *(p+1) == '/') {
 					*(p++) = ' ';
 					*(p++) = ' ';
 					break;
 				}
 				if (*p == '\n')
 					lineno++;
 				*(p++) = ' ';
 			}
 			--p;
 		}
 		else if (*p == '/' && (p+1) < eof && *(p+1) == '/') {
 			/* Consume C++ comments */
 			*(p++) = ' ';
 			*(p++) = ' ';
 			while (p < eof && *p) {
 				if (*p == '\\' && (p+1) < eof &&
 				    *(p+1) == '\n') {
 					*(p++) = ' ';
 					lineno++;
 				}
 				else if (*p == '?' && (p+3) < eof &&
 					 *(p+1) == '?' &&
 					 *(p+2) == '/' &&
 					 *(p+3) == '\n') {
 					*(p++) = ' ';
 					*(p++) = ' ';
 					*(p++) = ' ';
 					lineno++;
 				}
 				else if (*p == '\n')
 					break;	/* to process end of line */
 				*(p++) = ' ';
 			}
 			--p;
 		}
 		else if (*p == '\\' && (p+1) < eof && *(p+1) == '\n') {
 			/* Consume backslash line terminations */
 			*(p++) = ' ';
 			*p = ' ';
 			lineno++;
 		}
 		else if (*p == '?' && (p+3) < eof &&
 			 *(p+1) == '?' && *(p+2) == '/' && *(p+3) == '\n') {
 			/* Consume trigraph'ed backslash line terminations */
 			*(p++) = ' ';
 			*(p++) = ' ';
 			*(p++) = ' ';
 			*p = ' ';
 			lineno++;
 		}
 		else if (*p == '\n') {
 			lineno++;
 			if (*bol == '#') {
 				char *cp;
 				*(p++) = '\0';
 				/* punt lines with just # (yacc generated) */
 				for (cp = bol+1;
 				     *cp && (*cp == ' ' || *cp == '\t'); cp++);
 				if (*cp) goto done;
 				--p;
 			}
 			bol = p+1;
 			whitespace = FALSE;
 		}
 	}
 	if (*bol != '#')
 		bol = NULL;
 done:
 #if !defined(__UNIXOS2__) && !defined(_MSC_VER) && !defined(_WIN32)
 	/* Don't print warnings for system header files */
 	if (bol && whitespace && !strstr(filep->f_name, INCLUDEDIR)) {
 		warning("%s:  non-portable whitespace encountered at line %d\n",
 			filep->f_name, lineno);
 	}
 #endif
 	filep->f_p = p;
 	filep->f_line = lineno;
 #ifdef DEBUG_DUMP
 	if (bol)
 		DBG_PRINT(stderr,"%s\n",bol);
 #endif
 	return(bol);
 }
 /*
  * Strip the file name down to what we want to see in the Makefile.
  * It will have objprefix and objsuffix around it.
  */
 char *base_name(char *file)
 {
 	char	*p;
 	file = copy(file);
 	for(p=file+strlen(file); p>file && *p != '.'; p--) ;
 	if (*p == '.')
 		*p = '\0';
 	return(file);
 }
 #if defined(USG) && !defined(CRAY) && !defined(SVR4) && !defined(__UNIXOS2__) && !defined(clipper) && !defined(__clipper__)
 int rename (char *from, char *to)
 {
     (void) unlink (to);
     if (link (from, to) == 0) {
 	unlink (from);
 	return 0;
     } else {
 	return -1;
     }
 }
 #endif /* USGISH */
 void
 redirect(char *line, char *makefile)
 {
 	struct stat	st;
 	FILE	*fdin, *fdout;
 	char	backup[ BUFSIZ ],
 		buf[ BUFSIZ ];
 	boolean	found = FALSE;
 	int	len;
 	/*
 	 * if makefile is "-" then let it pour onto stdout.
 	 */
 	if (makefile && *makefile == '-' && *(makefile+1) == '\0') {
 		puts(line);
 		return;
 	}
 	/*
 	 * use a default makefile is not specified.
 	 */
 	if (!makefile) {
 		if (stat("Makefile", &st) == 0)
 			makefile = "Makefile";
 		else if (stat("makefile", &st) == 0)
 			makefile = "makefile";
 		else
 			fatalerr("[mM]akefile is not present\n");
 	}
 	else
 	    stat(makefile, &st);
 	if ((fdin = fopen(makefile, "r")) == NULL)
 		fatalerr("cannot open \"%s\"\n", makefile);
 	sprintf(backup, "%s.bak", makefile);
 	unlink(backup);
 #if defined(WIN32) || defined(__UNIXOS2__) || defined(__CYGWIN__)
 	fclose(fdin);
 #endif
 	if (rename(makefile, backup) < 0)
 		fatalerr("cannot rename %s to %s\n", makefile, backup);
 #if defined(WIN32) || defined(__UNIXOS2__) || defined(__CYGWIN__)
 	if ((fdin = fopen(backup, "r")) == NULL)
 		fatalerr("cannot open \"%s\"\n", backup);
 #endif
 	if ((fdout = freopen(makefile, "w", stdout)) == NULL)
 		fatalerr("cannot open \"%s\"\n", backup);
 	len = strlen(line);
 	while (!found && fgets(buf, BUFSIZ, fdin)) {
 		if (*buf == '#' && strncmp(line, buf, len) == 0)
 			found = TRUE;
 		fputs(buf, fdout);
 	}
 	if (!found) {
 		if (verbose)
 		warning("Adding new delimiting line \"%s\" and dependencies...\n",
 			line);
 		puts(line); /* same as fputs(fdout); but with newline */
 	} else if (append) {
 	    while (fgets(buf, BUFSIZ, fdin)) {
 		fputs(buf, fdout);
 	    }
 	}
 	fflush(fdout);
 #if defined(USGISH) || defined(_SEQUENT_) || defined(USE_CHMOD)
 	chmod(makefile, st.st_mode);
 #else
         fchmod(fileno(fdout), st.st_mode);
 #endif /* USGISH */
 }
 void
 fatalerr(char *msg, ...)
 {
 	va_list args;
 	fprintf(stderr, "%s: error:  ", ProgramName);
 	va_start(args, msg);
 	vfprintf(stderr, msg, args);
 	va_end(args);
 	exit (1);
 }
 void
 warning(char *msg, ...)
 {
 	va_list args;
 	fprintf(stderr, "%s: warning:  ", ProgramName);
 	va_start(args, msg);
 	vfprintf(stderr, msg, args);
 	va_end(args);
 }
 void
 warning1(char *msg, ...)
 {
 	va_list args;
 	va_start(args, msg);
 	vfprintf(stderr, msg, args);
 	va_end(args);
 }

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security/nss/coreconf/mkdepend/main.c@b8a032363ba2 (annotated)

security/nss/coreconf/mkdepend/main.c