summaryrefslogtreecommitdiffstats
path: root/nsprpub/tools
diff options
context:
space:
mode:
Diffstat (limited to 'nsprpub/tools')
-rw-r--r--nsprpub/tools/Makefile.in176
-rw-r--r--nsprpub/tools/httpget.c437
-rw-r--r--nsprpub/tools/tail.c144
3 files changed, 757 insertions, 0 deletions
diff --git a/nsprpub/tools/Makefile.in b/nsprpub/tools/Makefile.in
new file mode 100644
index 0000000000..29f19d94ac
--- /dev/null
+++ b/nsprpub/tools/Makefile.in
@@ -0,0 +1,176 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#! gmake
+
+MOD_DEPTH = ..
+topsrcdir = @top_srcdir@
+srcdir = @srcdir@
+VPATH = @srcdir@
+
+include $(MOD_DEPTH)/config/autoconf.mk
+
+include $(topsrcdir)/config/config.mk
+
+ifeq ($(OS_TARGET), WIN16)
+OS_CFLAGS = $(OS_EXE_CFLAGS)
+endif
+
+
+DIRS =
+
+CSRCS = \
+ httpget.c \
+ tail.c \
+ $(NULL)
+
+ifeq (,$(filter-out WINNT OS2,$(OS_ARCH)))
+PROG_SUFFIX = .exe
+else
+PROG_SUFFIX =
+endif
+
+PROGS = $(addprefix $(OBJDIR)/, $(CSRCS:.c=$(PROG_SUFFIX)))
+
+TARGETS = $(PROGS)
+
+INCLUDES = -I$(dist_includedir)
+
+NSPR_VERSION = 3
+
+# Setting the variables LDOPTS and LIBPR. We first initialize
+# them to the default values, then adjust them for some platforms.
+LDOPTS = -L$(dist_libdir)
+LIBPR = -lnspr$(NSPR_VERSION)
+LIBPLC = -lplc$(NSPR_VERSION)
+
+ifeq ($(OS_ARCH), WINNT)
+ifeq ($(OS_TARGET), WIN16)
+ LIBPR = $(dist_libdir)/nspr$(NSPR_VERSION).lib
+ LIBPLC= $(dist_libdir)/plc$(NSPR_VERSION).lib
+else
+LDOPTS = -NOLOGO -DEBUG -INCREMENTAL:NO
+LIBPR = $(dist_libdir)/libnspr$(NSPR_VERSION).$(LIB_SUFFIX)
+LIBPLC= $(dist_libdir)/libplc$(NSPR_VERSION).$(LIB_SUFFIX)
+endif
+endif
+
+ifeq ($(OS_ARCH),OS2)
+LDOPTS += -Zomf -Zlinker /PM:VIO
+endif
+
+ifneq ($(OS_ARCH), WINNT)
+PWD = $(shell pwd)
+endif
+
+ifeq ($(OS_ARCH), HP-UX)
+LDOPTS += -Wl,+s,+b,$(PWD)/$(dist_libdir)
+endif
+
+# AIX
+ifeq ($(OS_ARCH),AIX)
+LDOPTS += -blibpath:$(PWD)/$(dist_libdir):/usr/lib:/lib
+LIBPR = -lnspr$(NSPR_VERSION)_shr
+LIBPLC = -lplc$(NSPR_VERSION)_shr
+endif
+
+# Solaris
+ifeq ($(OS_ARCH), SunOS)
+ifdef NS_USE_GCC
+LDOPTS += -Xlinker -R -Xlinker $(PWD)/$(dist_libdir)
+else
+LDOPTS += -R $(PWD)/$(dist_libdir)
+endif
+
+# SunOS 5.5 needs to link with -lpthread, even though we already
+# linked with this system library when we built libnspr.so.
+ifeq ($(OS_RELEASE), 5.5)
+ifdef USE_PTHREADS
+EXTRA_LIBS = -lpthread
+endif
+endif
+endif # SunOS
+
+ifeq ($(OS_ARCH), SCOOS)
+# SCO Unix needs to link against -lsocket again even though we
+# already linked with these system libraries when we built libnspr.so.
+EXTRA_LIBS = -lsocket
+# This hardcodes in the executable programs the directory to find
+# libnspr.so etc. at program startup. Equivalent to the -R or -rpath
+# option for ld on other platforms.
+export LD_RUN_PATH = $(PWD)/$(dist_libdir)
+endif
+
+#####################################################
+#
+# The rules
+#
+#####################################################
+
+include $(topsrcdir)/config/rules.mk
+
+AIX_PRE_4_2 = 0
+ifeq ($(OS_ARCH),AIX)
+ifneq ($(OS_RELEASE),4.2)
+ifneq ($(USE_PTHREADS), 1)
+#AIX_PRE_4_2 = 1
+endif
+endif
+endif
+
+ifeq ($(AIX_PRE_4_2),1)
+
+# AIX releases prior to 4.2 need a special two-step linking hack
+# in order to both override the system select() and be able to
+# get at the original system select().
+#
+# We use a pattern rule in ns/nspr20/config/rules.mk to generate
+# the .$(OBJ_SUFFIX) file from the .c source file, then do the
+# two-step linking hack below.
+
+$(OBJDIR)/%: $(OBJDIR)/%.$(OBJ_SUFFIX)
+ @$(MAKE_OBJDIR)
+ rm -f $@ $(AIX_TMP)
+ $(CC) $(AIX_LINK_OPTS) -o $(AIX_TMP) $< $(dist_libdir)/libnspr$(NSPR_VERSION).a
+ $(CC) -o $@ $(AIX_TMP) $(AIX_WRAP)
+ rm -f $(AIX_TMP)
+
+else
+
+# All platforms that are not AIX pre-4.2.
+
+$(OBJDIR)/%$(PROG_SUFFIX): $(OBJDIR)/%.$(OBJ_SUFFIX)
+ @$(MAKE_OBJDIR)
+ifeq ($(OS_ARCH), WINNT)
+ifeq ($(OS_TARGET),WIN16)
+ echo system windows >w16link
+ echo option map >>w16link
+ echo option stack=10K >>w16link
+ echo option heapsize=32K >>w16link
+ echo debug $(DEBUGTYPE) all >>w16link
+ echo name $@ >>w16link
+ echo file >>w16link
+ echo $< >>w16link
+ echo library >>w16link
+ echo $(LIBPR), >>w16link
+ echo $(LIBPLC), >>w16link
+ echo winsock.lib >>w16link
+ wlink @w16link.
+else
+ link $(LDOPTS) $< $(LIBPR) $(LIBPLC) ws2_32.lib -out:$@
+endif
+else
+ifeq ($(OS_ARCH),OS2)
+ $(LINK) $(LDOPTS) $< $(LIBPR) $(LIBPLC) $(OS_LIBS) $(EXTRA_LIBS) -o $@
+else
+ $(CC) $(XCFLAGS) $< $(LDOPTS) $(LIBPR) $(LIBPLC) $(EXTRA_LIBS) -o $@
+endif
+endif
+endif
+
+export:: $(TARGETS)
+clean::
+ rm -f $(TARGETS)
+
diff --git a/nsprpub/tools/httpget.c b/nsprpub/tools/httpget.c
new file mode 100644
index 0000000000..ed36365122
--- /dev/null
+++ b/nsprpub/tools/httpget.c
@@ -0,0 +1,437 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+/*
+ * Author: Wan-Teh Chang
+ *
+ * Given an HTTP URL, httpget uses the GET method to fetch the file.
+ * The fetched file is written to stdout by default, or can be
+ * saved in an output file.
+ *
+ * This is a single-threaded program.
+ */
+
+#include "prio.h"
+#include "prnetdb.h"
+#include "prlog.h"
+#include "prerror.h"
+#include "prprf.h"
+#include "prinit.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h> /* for atoi */
+
+#define FCOPY_BUFFER_SIZE (16 * 1024)
+#define INPUT_BUFFER_SIZE 1024
+#define LINE_SIZE 512
+#define HOST_SIZE 256
+#define PORT_SIZE 32
+#define PATH_SIZE 512
+
+/*
+ * A buffer for storing the excess input data for ReadLine.
+ * The data in the buffer starts from (including) the element pointed to
+ * by inputHead, and ends just before (not including) the element pointed
+ * to by inputTail. The buffer is empty if inputHead == inputTail.
+ */
+
+static char inputBuf[INPUT_BUFFER_SIZE];
+/*
+ * inputBufEnd points just past the end of inputBuf
+ */
+static char *inputBufEnd = inputBuf + sizeof(inputBuf);
+static char *inputHead = inputBuf;
+static char *inputTail = inputBuf;
+
+static PRBool endOfStream = PR_FALSE;
+
+/*
+ * ReadLine --
+ *
+ * Read in a line of text, terminated by CRLF or LF, from fd into buf.
+ * The terminating CRLF or LF is included (always as '\n'). The text
+ * in buf is terminated by a null byte. The excess bytes are stored in
+ * inputBuf for use in the next ReadLine call or FetchFile call.
+ * Returns the number of bytes in buf. 0 means end of stream. Returns
+ * -1 if read fails.
+ */
+
+PRInt32 ReadLine(PRFileDesc *fd, char *buf, PRUint32 bufSize)
+{
+ char *dst = buf;
+ char *bufEnd = buf + bufSize; /* just past the end of buf */
+ PRBool lineFound = PR_FALSE;
+ char *crPtr = NULL; /* points to the CR ('\r') character */
+ PRInt32 nRead;
+
+loop:
+ PR_ASSERT(inputBuf <= inputHead && inputHead <= inputTail
+ && inputTail <= inputBufEnd);
+ while (lineFound == PR_FALSE && inputHead != inputTail
+ && dst < bufEnd - 1) {
+ if (*inputHead == '\r') {
+ crPtr = dst;
+ } else if (*inputHead == '\n') {
+ lineFound = PR_TRUE;
+ if (crPtr == dst - 1) {
+ dst--;
+ }
+ }
+ *(dst++) = *(inputHead++);
+ }
+ if (lineFound == PR_TRUE || dst == bufEnd - 1 || endOfStream == PR_TRUE) {
+ *dst = '\0';
+ return dst - buf;
+ }
+
+ /*
+ * The input buffer should be empty now
+ */
+ PR_ASSERT(inputHead == inputTail);
+
+ nRead = PR_Read(fd, inputBuf, sizeof(inputBuf));
+ if (nRead == -1) {
+ *dst = '\0';
+ return -1;
+ } else if (nRead == 0) {
+ endOfStream = PR_TRUE;
+ *dst = '\0';
+ return dst - buf;
+ }
+ inputHead = inputBuf;
+ inputTail = inputBuf + nRead;
+ goto loop;
+}
+
+PRInt32 DrainInputBuffer(char *buf, PRUint32 bufSize)
+{
+ PRInt32 nBytes = inputTail - inputHead;
+
+ if (nBytes == 0) {
+ if (endOfStream) {
+ return -1;
+ } else {
+ return 0;
+ }
+ }
+ if ((PRInt32) bufSize < nBytes) {
+ nBytes = bufSize;
+ }
+ memcpy(buf, inputHead, nBytes);
+ inputHead += nBytes;
+ return nBytes;
+}
+
+PRStatus FetchFile(PRFileDesc *in, PRFileDesc *out)
+{
+ char buf[FCOPY_BUFFER_SIZE];
+ PRInt32 nBytes;
+
+ while ((nBytes = DrainInputBuffer(buf, sizeof(buf))) > 0) {
+ if (PR_Write(out, buf, nBytes) != nBytes) {
+ fprintf(stderr, "httpget: cannot write to file\n");
+ return PR_FAILURE;
+ }
+ }
+ if (nBytes < 0) {
+ /* Input buffer is empty and end of stream */
+ return PR_SUCCESS;
+ }
+ while ((nBytes = PR_Read(in, buf, sizeof(buf))) > 0) {
+ if (PR_Write(out, buf, nBytes) != nBytes) {
+ fprintf(stderr, "httpget: cannot write to file\n");
+ return PR_FAILURE;
+ }
+ }
+ if (nBytes < 0) {
+ fprintf(stderr, "httpget: cannot read from socket\n");
+ return PR_FAILURE;
+ }
+ return PR_SUCCESS;
+}
+
+PRStatus FastFetchFile(PRFileDesc *in, PRFileDesc *out, PRUint32 size)
+{
+ PRInt32 nBytes;
+ PRFileMap *outfMap;
+ void *addr;
+ char *start;
+ PRUint32 rem;
+ PRUint32 bytesToRead;
+ PRStatus rv;
+ PRInt64 sz64;
+
+ LL_UI2L(sz64, size);
+ outfMap = PR_CreateFileMap(out, sz64, PR_PROT_READWRITE);
+ PR_ASSERT(outfMap);
+ addr = PR_MemMap(outfMap, LL_ZERO, size);
+ if (addr == NULL) {
+ fprintf(stderr, "cannot memory-map file: (%d, %d)\n", PR_GetError(),
+ PR_GetOSError());
+
+ PR_CloseFileMap(outfMap);
+ return PR_FAILURE;
+ }
+ start = (char *) addr;
+ rem = size;
+ while ((nBytes = DrainInputBuffer(start, rem)) > 0) {
+ start += nBytes;
+ rem -= nBytes;
+ }
+ if (nBytes < 0) {
+ /* Input buffer is empty and end of stream */
+ return PR_SUCCESS;
+ }
+ bytesToRead = (rem < FCOPY_BUFFER_SIZE) ? rem : FCOPY_BUFFER_SIZE;
+ while (rem > 0 && (nBytes = PR_Read(in, start, bytesToRead)) > 0) {
+ start += nBytes;
+ rem -= nBytes;
+ bytesToRead = (rem < FCOPY_BUFFER_SIZE) ? rem : FCOPY_BUFFER_SIZE;
+ }
+ if (nBytes < 0) {
+ fprintf(stderr, "httpget: cannot read from socket\n");
+ return PR_FAILURE;
+ }
+ rv = PR_MemUnmap(addr, size);
+ PR_ASSERT(rv == PR_SUCCESS);
+ rv = PR_CloseFileMap(outfMap);
+ PR_ASSERT(rv == PR_SUCCESS);
+ return PR_SUCCESS;
+}
+
+PRStatus ParseURL(char *url, char *host, PRUint32 hostSize,
+ char *port, PRUint32 portSize, char *path, PRUint32 pathSize)
+{
+ char *start, *end;
+ char *dst;
+ char *hostEnd;
+ char *portEnd;
+ char *pathEnd;
+
+ if (strncmp(url, "http", 4)) {
+ fprintf(stderr, "httpget: the protocol must be http\n");
+ return PR_FAILURE;
+ }
+ if (strncmp(url + 4, "://", 3) || url[7] == '\0') {
+ fprintf(stderr, "httpget: malformed URL: %s\n", url);
+ return PR_FAILURE;
+ }
+
+ start = end = url + 7;
+ dst = host;
+ hostEnd = host + hostSize;
+ while (*end && *end != ':' && *end != '/') {
+ if (dst == hostEnd - 1) {
+ fprintf(stderr, "httpget: host name too long\n");
+ return PR_FAILURE;
+ }
+ *(dst++) = *(end++);
+ }
+ *dst = '\0';
+
+ if (*end == '\0') {
+ PR_snprintf(port, portSize, "%d", 80);
+ PR_snprintf(path, pathSize, "%s", "/");
+ return PR_SUCCESS;
+ }
+
+ if (*end == ':') {
+ end++;
+ dst = port;
+ portEnd = port + portSize;
+ while (*end && *end != '/') {
+ if (dst == portEnd - 1) {
+ fprintf(stderr, "httpget: port number too long\n");
+ return PR_FAILURE;
+ }
+ *(dst++) = *(end++);
+ }
+ *dst = '\0';
+ if (*end == '\0') {
+ PR_snprintf(path, pathSize, "%s", "/");
+ return PR_SUCCESS;
+ }
+ } else {
+ PR_snprintf(port, portSize, "%d", 80);
+ }
+
+ dst = path;
+ pathEnd = path + pathSize;
+ while (*end) {
+ if (dst == pathEnd - 1) {
+ fprintf(stderr, "httpget: file pathname too long\n");
+ return PR_FAILURE;
+ }
+ *(dst++) = *(end++);
+ }
+ *dst = '\0';
+ return PR_SUCCESS;
+}
+
+void PrintUsage(void) {
+ fprintf(stderr, "usage: httpget url\n"
+ " httpget -o outputfile url\n"
+ " httpget url -o outputfile\n");
+}
+
+int main(int argc, char **argv)
+{
+ PRHostEnt hostentry;
+ char buf[PR_NETDB_BUF_SIZE];
+ PRNetAddr addr;
+ PRFileDesc *socket = NULL, *file = NULL;
+ PRIntn cmdSize;
+ char host[HOST_SIZE];
+ char port[PORT_SIZE];
+ char path[PATH_SIZE];
+ char line[LINE_SIZE];
+ int exitStatus = 0;
+ PRBool endOfHeader = PR_FALSE;
+ char *url;
+ char *fileName = NULL;
+ PRUint32 fileSize;
+
+ if (argc != 2 && argc != 4) {
+ PrintUsage();
+ exit(1);
+ }
+
+ if (argc == 2) {
+ /*
+ * case 1: httpget url
+ */
+ url = argv[1];
+ } else {
+ if (strcmp(argv[1], "-o") == 0) {
+ /*
+ * case 2: httpget -o outputfile url
+ */
+ fileName = argv[2];
+ url = argv[3];
+ } else {
+ /*
+ * case 3: httpget url -o outputfile
+ */
+ url = argv[1];
+ if (strcmp(argv[2], "-o") != 0) {
+ PrintUsage();
+ exit(1);
+ }
+ fileName = argv[3];
+ }
+ }
+
+ if (ParseURL(url, host, sizeof(host), port, sizeof(port),
+ path, sizeof(path)) == PR_FAILURE) {
+ exit(1);
+ }
+
+ if (PR_GetHostByName(host, buf, sizeof(buf), &hostentry)
+ == PR_FAILURE) {
+ fprintf(stderr, "httpget: unknown host name: %s\n", host);
+ exit(1);
+ }
+
+ addr.inet.family = PR_AF_INET;
+ addr.inet.port = PR_htons((short) atoi(port));
+ addr.inet.ip = *((PRUint32 *) hostentry.h_addr_list[0]);
+
+ socket = PR_NewTCPSocket();
+ if (socket == NULL) {
+ fprintf(stderr, "httpget: cannot create new tcp socket\n");
+ exit(1);
+ }
+
+ if (PR_Connect(socket, &addr, PR_INTERVAL_NO_TIMEOUT) == PR_FAILURE) {
+ fprintf(stderr, "httpget: cannot connect to http server\n");
+ exitStatus = 1;
+ goto done;
+ }
+
+ if (fileName == NULL) {
+ file = PR_STDOUT;
+ } else {
+ file = PR_Open(fileName, PR_RDWR | PR_CREATE_FILE | PR_TRUNCATE,
+ 00777);
+ if (file == NULL) {
+ fprintf(stderr, "httpget: cannot open file %s: (%d, %d)\n",
+ fileName, PR_GetError(), PR_GetOSError());
+ exitStatus = 1;
+ goto done;
+ }
+ }
+
+ cmdSize = PR_snprintf(buf, sizeof(buf), "GET %s HTTP/1.0\r\n\r\n", path);
+ PR_ASSERT(cmdSize == (PRIntn) strlen("GET HTTP/1.0\r\n\r\n")
+ + (PRIntn) strlen(path));
+ if (PR_Write(socket, buf, cmdSize) != cmdSize) {
+ fprintf(stderr, "httpget: cannot write to http server\n");
+ exitStatus = 1;
+ goto done;
+ }
+
+ if (ReadLine(socket, line, sizeof(line)) <= 0) {
+ fprintf(stderr, "httpget: cannot read line from http server\n");
+ exitStatus = 1;
+ goto done;
+ }
+
+ /* HTTP response: 200 == OK */
+ if (strstr(line, "200") == NULL) {
+ fprintf(stderr, "httpget: %s\n", line);
+ exitStatus = 1;
+ goto done;
+ }
+
+ while (ReadLine(socket, line, sizeof(line)) > 0) {
+ if (line[0] == '\n') {
+ endOfHeader = PR_TRUE;
+ break;
+ }
+ if (strncmp(line, "Content-Length", 14) == 0
+ || strncmp(line, "Content-length", 14) == 0) {
+ char *p = line + 14;
+
+ while (*p == ' ' || *p == '\t') {
+ p++;
+ }
+ if (*p != ':') {
+ continue;
+ }
+ p++;
+ while (*p == ' ' || *p == '\t') {
+ p++;
+ }
+ fileSize = 0;
+ while ('0' <= *p && *p <= '9') {
+ fileSize = 10 * fileSize + (*p - '0');
+ p++;
+ }
+ }
+ }
+ if (endOfHeader == PR_FALSE) {
+ fprintf(stderr, "httpget: cannot read line from http server\n");
+ exitStatus = 1;
+ goto done;
+ }
+
+ if (fileName == NULL || fileSize == 0) {
+ FetchFile(socket, file);
+ } else {
+ FastFetchFile(socket, file, fileSize);
+ }
+
+done:
+ if (socket) {
+ PR_Close(socket);
+ }
+ if (file) {
+ PR_Close(file);
+ }
+ PR_Cleanup();
+ return exitStatus;
+}
diff --git a/nsprpub/tools/tail.c b/nsprpub/tools/tail.c
new file mode 100644
index 0000000000..d9b87a0e62
--- /dev/null
+++ b/nsprpub/tools/tail.c
@@ -0,0 +1,144 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "prio.h"
+#include "prprf.h"
+#include "prinit.h"
+#include "prthread.h"
+#include "prinrval.h"
+
+#include "plerror.h"
+#include "plgetopt.h"
+
+#include <stdlib.h>
+
+#define BUFFER_SIZE 500
+
+static PRFileDesc *out = NULL, *err = NULL;
+
+static void Help(void)
+{
+ PR_fprintf(err, "Usage: tail [-n <n>] [-f] [-h] <filename>\n");
+ PR_fprintf(err, "\t-t <n> Dally time in milliseconds\n");
+ PR_fprintf(err, "\t-n <n> Number of bytes before <eof>\n");
+ PR_fprintf(err, "\t-f Follow the <eof>\n");
+ PR_fprintf(err, "\t-h This message and nothing else\n");
+} /* Help */
+
+PRIntn main(PRIntn argc, char **argv)
+{
+ PRIntn rv = 0;
+ PLOptStatus os;
+ PRStatus status;
+ PRFileDesc *file;
+ PRFileInfo fileInfo;
+ PRIntervalTime dally;
+ char buffer[BUFFER_SIZE];
+ PRBool follow = PR_FALSE;
+ const char *filename = NULL;
+ PRUint32 position = 0, seek = 0, time = 0;
+ PLOptState *opt = PL_CreateOptState(argc, argv, "hfn:");
+
+ out = PR_GetSpecialFD(PR_StandardOutput);
+ err = PR_GetSpecialFD(PR_StandardError);
+
+ while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
+ {
+ if (PL_OPT_BAD == os) {
+ continue;
+ }
+ switch (opt->option)
+ {
+ case 0: /* it's the filename */
+ filename = opt->value;
+ break;
+ case 'n': /* bytes before end of file */
+ seek = atoi(opt->value);
+ break;
+ case 't': /* dally time */
+ time = atoi(opt->value);
+ break;
+ case 'f': /* follow the end of file */
+ follow = PR_TRUE;
+ break;
+ case 'h': /* user wants some guidance */
+ Help(); /* so give him an earful */
+ return 2; /* but not a lot else */
+ break;
+ default:
+ break;
+ }
+ }
+ PL_DestroyOptState(opt);
+
+ if (0 == time) {
+ time = 1000;
+ }
+ dally = PR_MillisecondsToInterval(time);
+
+ if (NULL == filename)
+ {
+ (void)PR_fprintf(out, "Input file not specified\n");
+ rv = 1; goto done;
+ }
+ file = PR_Open(filename, PR_RDONLY, 0);
+ if (NULL == file)
+ {
+ PL_FPrintError(err, "File cannot be opened for reading");
+ return 1;
+ }
+
+ status = PR_GetOpenFileInfo(file, &fileInfo);
+ if (PR_FAILURE == status)
+ {
+ PL_FPrintError(err, "Cannot acquire status of file");
+ rv = 1; goto done;
+ }
+ if (seek > 0)
+ {
+ if (seek > fileInfo.size) {
+ seek = 0;
+ }
+ position = PR_Seek(file, (fileInfo.size - seek), PR_SEEK_SET);
+ if (-1 == (PRInt32)position) {
+ PL_FPrintError(err, "Cannot seek to starting position");
+ }
+ }
+
+ do
+ {
+ while (position < fileInfo.size)
+ {
+ PRInt32 read, bytes = fileInfo.size - position;
+ if (bytes > sizeof(buffer)) {
+ bytes = sizeof(buffer);
+ }
+ read = PR_Read(file, buffer, bytes);
+ if (read != bytes) {
+ PL_FPrintError(err, "Cannot read to eof");
+ }
+ position += read;
+ PR_Write(out, buffer, read);
+ }
+
+ if (follow)
+ {
+ PR_Sleep(dally);
+ status = PR_GetOpenFileInfo(file, &fileInfo);
+ if (PR_FAILURE == status)
+ {
+ PL_FPrintError(err, "Cannot acquire status of file");
+ rv = 1; goto done;
+ }
+ }
+ } while (follow);
+
+done:
+ PR_Close(file);
+
+ return rv;
+} /* main */
+
+/* tail.c */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 02:13:49 +0000