-/* @(#) $Id: ./src/os_xml/os_xml_writer.c, 2011/09/08 dcid Exp $
- */
-
/* Copyright (C) 2009 Trend Micro Inc.
* All rights reserved.
*
* Foundation
*/
-/* os_xml Library.
- * Available at http://www.ossec.net/
- */
-
#include <stdio.h>
#include <string.h>
#include "os_xml.h"
#include "os_xml_internal.h"
-/* Internal functions */
+/* Prototypes */
static int _oswcomment(FILE *fp_in, FILE *fp_out) __attribute__((nonnull));
static int _WReadElem(FILE *fp_in, FILE *fp_out, unsigned int position, unsigned int parent,
- const char **node, const char *value, unsigned int node_pos) __attribute__((nonnull));
+ const char **node, const char *value, unsigned int node_pos) __attribute__((nonnull));
static int _xml_wfgetc(FILE *fp_in, FILE *fp_out) __attribute__((nonnull));
-/* Local fgetc */
+
+/* Local wfgetc */
static int _xml_wfgetc(FILE *fp_in, FILE *fp_out)
{
int c;
/* Putting on fp_out, whatever we read */
c = fgetc(fp_in);
- if(c != EOF)
- {
+ if (c != EOF) {
fputc(c, fp_out);
}
- return(c);
+ return (c);
}
-/* OS_WriteXML
- * Write an XML file, based on the input and values to change.
- */
+/* Write an XML file, based on the input and values to change */
int OS_WriteXML(const char *infile, const char *outfile, const char **nodes,
- const char *oldval, const char *newval)
+ const char *oldval, const char *newval)
{
int r = 0;
FILE *fp_in;
FILE *fp_out;
-
- /* Opening infile */
- fp_in = fopen(infile,"r");
- if(!fp_in)
- {
- return(XMLW_NOIN);
+ /* Open infile */
+ fp_in = fopen(infile, "r");
+ if (!fp_in) {
+ return (XMLW_NOIN);
}
-
- /* Opening out file */
- fp_out = fopen(outfile,"w");
- if(!fp_out)
- {
+ /* Open outfile */
+ fp_out = fopen(outfile, "w");
+ if (!fp_out) {
fclose(fp_in);
- return(XMLW_NOOUT);
+ return (XMLW_NOOUT);
}
-
- if((r = _WReadElem(fp_in, fp_out, 0, 0,
- nodes, newval, 0)) < 0) /* First position */
- {
+ if ((r = _WReadElem(fp_in, fp_out, 0, 0,
+ nodes, newval, 0)) < 0) { /* First position */
fclose(fp_in);
fclose(fp_out);
- return(XMLW_ERROR);
+ return (XMLW_ERROR);
}
- /* We didn't find an entry, add at the end. */
- if(!oldval && r == 0)
- {
+ /* We didn't find an entry, add at the end */
+ if (!oldval && r == 0) {
int s = 0;
int rwidth = 0;
fseek(fp_out, 0, SEEK_END);
fprintf(fp_out, "\n");
- /* Printing each node. */
- while(nodes[s])
- {
+ /* Print each node */
+ while (nodes[s]) {
fprintf(fp_out, "%*c<%s>", rwidth, ' ', nodes[s]);
s++;
rwidth += 3;
- if(nodes[s])
+ if (nodes[s]) {
fprintf(fp_out, "\n");
+ }
}
- /* Printing val. */
+ /* Print val */
s--;
- rwidth -=6;
+ rwidth -= 6;
fprintf(fp_out, "%s</%s>\n", newval, nodes[s]);
s--;
-
- /* Closing each node. */
- while(s >= 0)
- {
+ /* Close each node */
+ while (s >= 0) {
fprintf(fp_out, "%*c</%s>\n", rwidth, ' ', nodes[s]);
s--;
rwidth -= 3;
fclose(fp_in);
fclose(fp_out);
- return(0);
+ return (0);
}
-
-
-/* Getting comments */
+/* Get comments */
static int _oswcomment(FILE *fp_in, FILE *fp_out)
{
int c;
- if((c = fgetc(fp_in)) == _R_COM)
- {
+ if ((c = fgetc(fp_in)) == _R_COM) {
fputc(c, fp_out);
- while((c = _xml_wfgetc(fp_in, fp_out)) != EOF)
- {
- if(c == _R_COM)
- {
- if((c=fgetc(fp_in)) == _R_CONFE)
- {
+ while ((c = _xml_wfgetc(fp_in, fp_out)) != EOF) {
+ if (c == _R_COM) {
+ if ((c = fgetc(fp_in)) == _R_CONFE) {
fputc(c, fp_out);
- return(1);
+ return (1);
}
- ungetc(c,fp_in);
- }
- else if(c == '-') /* W3C way of finish comments */
- {
- if((c = fgetc(fp_in)) == '-')
- {
+ ungetc(c, fp_in);
+ } else if (c == '-') { /* W3C way of finishing comments */
+ if ((c = fgetc(fp_in)) == '-') {
fputc(c, fp_out);
- if((c = fgetc(fp_in)) == _R_CONFE)
- {
+ if ((c = fgetc(fp_in)) == _R_CONFE) {
fputc(c, fp_out);
- return(1);
+ return (1);
}
- ungetc(c,fp_in);
- }
- else
- {
- ungetc(c,fp_in);
+ ungetc(c, fp_in);
+ } else {
+ ungetc(c, fp_in);
}
- }
- else
- {
+ } else {
continue;
}
}
- return(-1);
- }
- else
- {
- ungetc(c,fp_in);
+ return (-1);
+ } else {
+ ungetc(c, fp_in);
}
- return(0);
+ return (0);
}
-
-
-static int _WReadElem(FILE *fp_in, FILE *fp_out,
- unsigned int position, unsigned int parent, const char **nodes, const char *val, unsigned int node_pos)
+static int _WReadElem(FILE *fp_in, FILE *fp_out, unsigned int position,
+ unsigned int parent, const char **nodes,
+ const char *val, unsigned int node_pos)
{
int c;
int ret_code = 0;
unsigned int count = 0;
short int location = -1;
- char elem[XML_MAXSIZE +1];
- char cont[XML_MAXSIZE +1];
- char closedelem[XML_MAXSIZE +1];
-
- memset(elem,'\0',XML_MAXSIZE +1);
- memset(cont,'\0',XML_MAXSIZE +1);
- memset(closedelem,'\0',XML_MAXSIZE +1);
+ char elem[XML_MAXSIZE + 1];
+ char cont[XML_MAXSIZE + 1];
+ char closedelim[XML_MAXSIZE + 1];
+ memset(elem, '\0', XML_MAXSIZE + 1);
+ memset(cont, '\0', XML_MAXSIZE + 1);
+ memset(closedelim, '\0', XML_MAXSIZE + 1);
- while((c = _xml_wfgetc(fp_in, fp_out)) != EOF)
- {
+ while ((c = _xml_wfgetc(fp_in, fp_out)) != EOF) {
/* Max size */
- if(count >= XML_MAXSIZE)
- {
- return(-1);
+ if (count >= XML_MAXSIZE) {
+ return (-1);
}
- /* Checking for comments */
- if(c == _R_CONFS)
- {
+ /* Check for comments */
+ if (c == _R_CONFS) {
int r = 0;
- if((r = _oswcomment(fp_in, fp_out)) < 0)
- {
- return(-1);
- }
- else if(r == 1)
- {
+ if ((r = _oswcomment(fp_in, fp_out)) < 0) {
+ return (-1);
+ } else if (r == 1) {
continue;
}
}
-
/* Real checking */
- if(location == -1)
- {
+ if (location == -1) {
/* Must be the opening element */
- if(c == _R_CONFS)
- {
- if((c = fgetc(fp_in)) == '/')
- {
- return(-1);
- }
- else
- {
- ungetc(c,fp_in);
+ if (c == _R_CONFS) {
+ if ((c = fgetc(fp_in)) == '/') {
+ return (-1);
+ } else {
+ ungetc(c, fp_in);
}
location = 0;
- }
- else
- {
+ } else {
continue;
}
}
-
- /* Looking for the closure */
- else if((location == 0) && ((c == _R_CONFE) || (c == ' ')))
- {
+ /* Look for the closure */
+ else if ((location == 0) && ((c == _R_CONFE) || (c == ' '))) {
int _ge = 0;
elem[count] = '\0';
-
- /* Removing the / at the end of the element name */
- if(count > 0 && elem[count -1] == '/')
- {
+ /* Remove the / at the end of the element name */
+ if (count > 0 && elem[count - 1] == '/') {
_ge = '/';
- elem[count -1] = '\0';
+ elem[count - 1] = '\0';
}
-
/* If we may have more attributes */
- if(c == ' ')
- {
- /* Writing the attributes */
- while((c = _xml_wfgetc(fp_in, fp_out)) != EOF)
- {
- if(c == _R_CONFE)
- {
+ if (c == ' ') {
+ /* Write the attributes */
+ while ((c = _xml_wfgetc(fp_in, fp_out)) != EOF) {
+ if (c == _R_CONFE) {
break;
}
}
}
-
/* If the element is closed already (finished in />) */
- if(_ge == '/')
- {
+ if (_ge == '/') {
count = 0;
location = -1;
- memset(elem,'\0',XML_MAXSIZE);
- memset(closedelem,'\0',XML_MAXSIZE);
- memset(cont,'\0',XML_MAXSIZE);
+ memset(elem, '\0', XML_MAXSIZE);
+ memset(closedelim, '\0', XML_MAXSIZE);
+ memset(cont, '\0', XML_MAXSIZE);
- if(parent > 0)
- {
- return(ret_code);
+ if (parent > 0) {
+ return (ret_code);
}
}
/* Location == means we are getting the content */
- else
- {
+ else {
count = 0;
location = 1;
}
-
- /* Checking position of the node */
- if(node_pos > position)
- {
+ /* Check position of the node */
+ if (node_pos > position) {
node_pos = 0;
}
- /* Checking if the element name matches */
- if(node_pos == position &&
- nodes[node_pos] && strcmp(elem, nodes[node_pos]) == 0)
- {
+ /* Check if the element name matches */
+ if (node_pos == position &&
+ nodes[node_pos] && strcmp(elem, nodes[node_pos]) == 0) {
node_pos++;
- /* Latest node, printint value */
- if(!nodes[node_pos])
- {
+ /* Latest node, print value */
+ if (!nodes[node_pos]) {
ret_code = 1;
fprintf(fp_out, "%s", val);
- while((c = fgetc(fp_in)) != EOF)
- {
- if(c == _R_CONFS)
- {
- ungetc(c,fp_in);
+ while ((c = fgetc(fp_in)) != EOF) {
+ if (c == _R_CONFS) {
+ ungetc(c, fp_in);
break;
}
}
}
}
- else if((location == 2) &&(c == _R_CONFE))
- {
- closedelem[count]='\0';
- if(strcmp(closedelem,elem) != 0)
- {
- return(-1);
+ else if ((location == 2) && (c == _R_CONFE)) {
+ closedelim[count] = '\0';
+ if (strcmp(closedelim, elem) != 0) {
+ return (-1);
}
- memset(elem,'\0',XML_MAXSIZE);
- memset(closedelem,'\0',XML_MAXSIZE);
- memset(cont,'\0',XML_MAXSIZE);
+ memset(elem, '\0', XML_MAXSIZE);
+ memset(closedelim, '\0', XML_MAXSIZE);
+ memset(cont, '\0', XML_MAXSIZE);
count = 0;
location = -1;
- if(parent > 0)
- {
- return(ret_code);
+ if (parent > 0) {
+ return (ret_code);
}
}
/* If we are reading the element */
- else if((location == 1) &&(c == _R_CONFS))
- {
- if((c=fgetc(fp_in)) == '/')
- {
+ else if ((location == 1) && (c == _R_CONFS)) {
+ if ((c = fgetc(fp_in)) == '/') {
fputc(c, fp_out);
cont[count] = '\0';
count = 0;
location = 2;
- }
- else
- {
+ } else {
int wret_code;
- ungetc(c,fp_in);
- ungetc(_R_CONFS,fp_in);
- fseek(fp_out, -1, SEEK_CUR);
-
- if((wret_code = _WReadElem(fp_in, fp_out, position+1, parent+1,
- nodes, val, node_pos))< 0)
- {
- return(-1);
+ ungetc(c, fp_in);
+ ungetc(_R_CONFS, fp_in);
+ if (fseek(fp_out, -1, SEEK_CUR)) {
+ return (-1);
}
- /* Setting final return code. */
- if(wret_code == 1)
- {
+ if ((wret_code = _WReadElem(fp_in, fp_out, position + 1, parent + 1,
+ nodes, val, node_pos)) < 0) {
+ return (-1);
+ }
+
+ /* Set final return code */
+ if (wret_code == 1) {
ret_code = 1;
}
count = 0;
}
- }
- else
- {
- if(location == 0)
- {
+ } else {
+ if (location == 0) {
elem[count++] = (char) c;
- }
- else if(location == 1)
- {
+ } else if (location == 1) {
cont[count++] = (char) c;
- }
- else if(location == 2)
- {
- closedelem[count++] = (char) c;
+ } else if (location == 2) {
+ closedelim[count++] = (char) c;
}
}
}
- if(location == -1)
- {
- return(ret_code);
+ if (location == -1) {
+ return (ret_code);
}
-
- return(-1);
+ return (-1);
}
-
-
-
-/* EOF */
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