Mercurial > libpst
changeset 170:0e1e048716e4
fix bug where we failed to pickup the last extended attribute.
patch from Emmanuel Andry to fix potential security bug in pst2dii with printf(err).
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Sun, 22 Mar 2009 14:34:26 -0700 |
| parents | 062aa7b7ec22 |
| children | 6c1e75bc4cac |
| files | AUTHORS ChangeLog configure.in src/libpst.c src/libpst.h src/pst2dii.cpp.in |
| diffstat | 6 files changed, 82 insertions(+), 73 deletions(-) [+] |
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--- a/AUTHORS Thu Mar 19 16:46:22 2009 -0700 +++ b/AUTHORS Sun Mar 22 14:34:26 2009 -0700 @@ -25,6 +25,8 @@ David Cuadrado <krawek@gmail.com> Chris Eagle <cseagle@redshift.com> Fridrich Strba <fstrba@novell.com> + Emmanuel Andry <eandry@mandriva.org> + Testing team: Mac OSX - Michael Watson <mike@mikeandgayle.com>
--- a/ChangeLog Thu Mar 19 16:46:22 2009 -0700 +++ b/ChangeLog Sun Mar 22 14:34:26 2009 -0700 @@ -1,3 +1,9 @@ +LibPST 0.6.35 (2009-xx-xx) +=============================== + * fix bug where we failed to pickup the last extended attribute. + * patch from Emmanuel Andry to fix potential security bug in + pst2dii with printf(err). + LibPST 0.6.34 (2009-03-19) =============================== * improve consistency checking when fetching items from the pst file.
--- a/configure.in Thu Mar 19 16:46:22 2009 -0700 +++ b/configure.in Sun Mar 22 14:34:26 2009 -0700 @@ -1,5 +1,5 @@ AC_PREREQ(2.59) -AC_INIT(libpst,0.6.34,carl@five-ten-sg.com) +AC_INIT(libpst,0.6.35,carl@five-ten-sg.com) AC_CONFIG_SRCDIR([src/libpst.c]) AC_CONFIG_HEADER([config.h]) AM_INIT_AUTOMAKE
--- a/src/libpst.c Thu Mar 19 16:46:22 2009 -0700 +++ b/src/libpst.c Sun Mar 22 14:34:26 2009 -0700 @@ -518,27 +518,30 @@ } pst_x_attrib; +/** Try to load the extended attributes from the pst file. + @return true(1) or false(0) to indicate whether the extended attributes have been loaded + */ int pst_load_extended_attributes(pst_file *pf) { - // for PST files this will load up ID2 0x61 and check it's "list" attribute. + // for PST files this will load up d_id 0x61 and check it's "assoc_tree" attribute. pst_desc_ll *p; - pst_mapi_object *na; + pst_mapi_object *list; pst_id2_ll *id2_head = NULL; char *buffer=NULL, *headerbuffer=NULL; size_t bsize=0, hsize=0, bptr=0; pst_x_attrib xattrib; int32_t tint, err=0, x; - pst_x_attrib_ll *ptr, *p_head=NULL, *p_sh=NULL, *p_sh2=NULL; + pst_x_attrib_ll *ptr, *p_head=NULL; DEBUG_ENT("pst_loadExtendedAttributes"); p = pst_getDptr(pf, (uint64_t)0x61); if (!p) { - DEBUG_WARN(("Cannot find DescID 0x61 for loading the Extended Attributes\n")); + DEBUG_WARN(("Cannot find d_id 0x61 for loading the Extended Attributes\n")); DEBUG_RET(); return 0; } if (!p->desc) { - DEBUG_WARN(("desc is NULL for item 0x61. Cannot load Extended Attributes\n")); + DEBUG_WARN(("descriptor is NULL for d_id 0x61. Cannot load Extended Attributes\n")); DEBUG_RET(); return 0; } @@ -547,49 +550,53 @@ id2_head = pst_build_id2(pf, p->assoc_tree); pst_printID2ptr(id2_head); } else { - DEBUG_WARN(("Have not been able to fetch any id2 values for item 0x61. Brace yourself!\n")); + DEBUG_WARN(("Have not been able to fetch any id2 values for d_id 0x61. Brace yourself!\n")); } - na = pst_parse_block(pf, p->desc->i_id, id2_head); - if (!na) { + list = pst_parse_block(pf, p->desc->i_id, id2_head); + if (!list) { DEBUG_WARN(("Cannot process desc block for item 0x61. Not loading extended Attributes\n")); pst_free_id2(id2_head); DEBUG_RET(); return 0; } - for (x=0; x < na->count_elements; x++) { - if (na->elements[x]->mapi_id == (uint32_t)0x0003) { - buffer = na->elements[x]->data; - bsize = na->elements[x]->size; - } else if (na->elements[x]->mapi_id == (uint32_t)0x0004) { - headerbuffer = na->elements[x]->data; - hsize = na->elements[x]->size; + DEBUG_EMAIL(("look thru d_id 0x61 list of mapi objects\n")); + for (x=0; x < list->count_elements; x++) { + DEBUG_EMAIL(("#%d - mapi-id: %#x type: %#x length: %#x\n", x, list->elements[x]->mapi_id, list->elements[x]->type, list->elements[x]->size)); + if (list->elements[x]->data) { + DEBUG_HEXDUMPC(list->elements[x]->data, list->elements[x]->size, 0x10); + } + if (list->elements[x]->mapi_id == (uint32_t)0x0003) { + buffer = list->elements[x]->data; + bsize = list->elements[x]->size; + } else if (list->elements[x]->mapi_id == (uint32_t)0x0004) { + headerbuffer = list->elements[x]->data; + hsize = list->elements[x]->size; } else { // leave them null } } if (!buffer) { - pst_free_list(na); + pst_free_list(list); DEBUG_WARN(("No extended attributes buffer found. Not processing\n")); DEBUG_RET(); return 0; } - xattrib.extended= PST_LE_GET_UINT32(buffer+bptr), bptr += 4; - xattrib.type = PST_LE_GET_UINT16(buffer+bptr), bptr += 2; - xattrib.map = PST_LE_GET_UINT16(buffer+bptr), bptr += 2; - - while (xattrib.type != 0 && bptr < bsize) { + while (bptr < bsize) { + int err = 0; + xattrib.extended= PST_LE_GET_UINT32(buffer+bptr), bptr += 4; + xattrib.type = PST_LE_GET_UINT16(buffer+bptr), bptr += 2; + xattrib.map = PST_LE_GET_UINT16(buffer+bptr), bptr += 2; ptr = (pst_x_attrib_ll*) xmalloc(sizeof(*ptr)); memset(ptr, 0, sizeof(*ptr)); ptr->type = xattrib.type; ptr->map = xattrib.map+0x8000; ptr->next = NULL; - DEBUG_INDEX(("xattrib: ext = %#x, type = %#hx, map = %#hx\n", + DEBUG_INDEX(("xattrib: ext = %#"PRIx32", type = %#"PRIx16", map = %#"PRIx16"\n", xattrib.extended, xattrib.type, xattrib.map)); - err=0; if (xattrib.type & 0x0001) { // if the Bit 1 is set // pointer to Unicode field in buffer if (xattrib.extended < hsize) { @@ -602,9 +609,10 @@ memcpy(wt, &(headerbuffer[xattrib.extended+sizeof(tint)]), (size_t)tint); ptr->data = pst_wide_to_single(wt, (size_t)tint); free(wt); - DEBUG_INDEX(("Read string (converted from UTF-16): %s\n", ptr->data)); + DEBUG_INDEX(("Mapped attribute %#"PRIx32" to %s\n", ptr->map, ptr->data)); } else { DEBUG_INDEX(("Cannot read outside of buffer [%i !< %i]\n", xattrib.extended, hsize)); + err = 1; } ptr->mytype = PST_MAP_HEADER; } else { @@ -613,16 +621,16 @@ memset(ptr->data, 0, sizeof(uint32_t)); *((uint32_t*)ptr->data) = xattrib.extended; ptr->mytype = PST_MAP_ATTRIB; - DEBUG_INDEX(("Mapped attribute %#x to %#x\n", ptr->map, *((int32_t*)ptr->data))); + DEBUG_INDEX(("Mapped attribute %#"PRIx32" to %#"PRIx32"\n", ptr->map, *((uint32_t*)ptr->data))); } - if (err==0) { + if (!err) { // add it to the list - p_sh = p_head; - p_sh2 = NULL; + pst_x_attrib_ll *p_sh = p_head; + pst_x_attrib_ll *p_sh2 = NULL; while (p_sh && ptr->map > p_sh->map) { p_sh2 = p_sh; - p_sh = p_sh->next; + p_sh = p_sh->next; } if (!p_sh2) { // needs to go before first item @@ -635,16 +643,10 @@ } } else { free(ptr); - ptr = NULL; } - memcpy(&xattrib, &(buffer[bptr]), sizeof(xattrib)); - LE32_CPU(xattrib.extended); - LE16_CPU(xattrib.type); - LE16_CPU(xattrib.map); - bptr += sizeof(xattrib); } pst_free_id2(id2_head); - pst_free_list(na); + pst_free_list(list); pf->x_head = p_head; DEBUG_RET(); return 1; @@ -1556,9 +1558,9 @@ mo_ptr->elements[x]->mapi_id = *((uint32_t*)mapptr->data); DEBUG_EMAIL(("Mapped attrib %#x to %#x\n", table_rec.type, mo_ptr->elements[x]->mapi_id)); } else if (mapptr->mytype == PST_MAP_HEADER) { - DEBUG_EMAIL(("Internet Header mapping found %#x\n", table_rec.type)); + DEBUG_EMAIL(("Internet Header mapping found %#"PRIx32" to %s\n", table_rec.type, mapptr->data)); mo_ptr->elements[x]->mapi_id = (uint32_t)PST_ATTRIB_HEADER; - mo_ptr->elements[x]->extra = mapptr->data; + mo_ptr->elements[x]->extra = mapptr->data; } else { DEBUG_WARN(("Missing assertion failure\n")); @@ -1981,43 +1983,40 @@ int32_t x; for (x=0; x<list->count_elements; x++) { int32_t t; - pst_item_extra_field *ef; - // check here to see if the id is one that is mapped. DEBUG_EMAIL(("#%d - mapi-id: %#x type: %#x length: %#x\n", x, list->elements[x]->mapi_id, list->elements[x]->type, list->elements[x]->size)); switch (list->elements[x]->mapi_id) { case PST_ATTRIB_HEADER: // CUSTOM attribute for saying the Extra Headers - if ((list->elements[x]->extra) && - ((list->elements[x]->type == 0x1f) || - (list->elements[x]->type == 0x1e))) { - ef = (pst_item_extra_field*) xmalloc(sizeof(pst_item_extra_field)); + if (list->elements[x]->extra) { + pst_item_extra_field *ef = (pst_item_extra_field*) xmalloc(sizeof(pst_item_extra_field)); memset(ef, 0, sizeof(pst_item_extra_field)); - ef->field_name = (char*) xmalloc(strlen(list->elements[x]->extra)+1); - strcpy(ef->field_name, list->elements[x]->extra); + ef->field_name = strdup(list->elements[x]->extra); LIST_COPY_CSTR(ef->value); - ef->next = item->extra_fields; - item->extra_fields = ef; - DEBUG_EMAIL(("Extra Field - \"%s\" = \"%s\"\n", ef->field_name, ef->value)); - if (strcmp(ef->field_name, "content-type") == 0) { - char *p = strstr(ef->value, "charset=\""); - if (p) { - p += 9; // skip over charset=" - char *pp = strchr(p, '"'); - if (pp) { - *pp = '\0'; - char *set = strdup(p); - *pp = '"'; - if (item->body_charset.str) free(item->body_charset.str); - item->body_charset.str = set; - item->body_charset.is_utf8 = 1; - DEBUG_EMAIL(("body charset %s from content-type extra field\n", set)); + if (ef->value) { + ef->next = item->extra_fields; + item->extra_fields = ef; + DEBUG_EMAIL(("Extra Field - \"%s\" = \"%s\"\n", ef->field_name, ef->value)); + if (strcmp(ef->field_name, "content-type") == 0) { + char *p = strstr(ef->value, "charset=\""); + if (p) { + p += 9; // skip over charset=" + char *pp = strchr(p, '"'); + if (pp) { + *pp = '\0'; + char *set = strdup(p); + *pp = '"'; + if (item->body_charset.str) free(item->body_charset.str); + item->body_charset.str = set; + item->body_charset.is_utf8 = 1; + DEBUG_EMAIL(("body charset %s from content-type extra field\n", set)); + } } } } - } - else { - DEBUG_EMAIL(("What does this mean?\n")); - DEBUG_HEXDUMP(list->elements[x]->data, list->elements[x]->size); + else { + DEBUG_EMAIL(("What does this mean? Internet header %s value\n", list->elements[x]->extra)); + DEBUG_HEXDUMP(list->elements[x]->data, list->elements[x]->size); + } } break; case 0x0002: // PR_ALTERNATE_RECIPIENT_ALLOWED
--- a/src/libpst.h Thu Mar 19 16:46:22 2009 -0700 +++ b/src/libpst.h Sun Mar 22 14:34:26 2009 -0700 @@ -542,8 +542,10 @@ pst_x_attrib_ll *x_head; pst_block_recorder *block_head; - int do_read64; // 0 is 32-bit pst file, pre Outlook 2003; - // 1 is 64-bit pst file, Outlook 2003 and later + /** 0 is 32-bit pst file, pre Outlook 2003; + * 1 is 64-bit pst file, Outlook 2003 and later + */ + int do_read64; uint64_t index1; uint64_t index1_back; uint64_t index2;
--- a/src/pst2dii.cpp.in Thu Mar 19 16:46:22 2009 -0700 +++ b/src/pst2dii.cpp.in Sun Mar 22 14:34:26 2009 -0700 @@ -240,15 +240,15 @@ while ((p = strchr(l, '&'))) { *p = '\0'; char *err = gdImageStringFTEx(image, &brect[0], color, font_file, sz, 0.0, x_position, y_position, l, &strex); - if (err) printf(err); + if (err) printf("%s", err); x_position += (brect[2]-brect[6]); l = p+1; err = gdImageStringFTEx(image, &brect[0], color, font_file, sz, 0.0, x_position, y_position, (char*)"&", &strex); - if (err) printf(err); + if (err) printf("%s", err); x_position += (brect[2]-brect[6]); } char *err = gdImageStringFTEx(image, &brect[0], color, font_file, sz, 0.0, x_position, y_position, l, &strex); - if (err) printf(err); + if (err) printf("%s", err); x_position += (brect[2]-brect[6]); col_number += len; } @@ -331,7 +331,7 @@ char line[LINE_SIZE]; char *err = gdImageStringFTEx(NULL, &brect[0], black, font_file, sz, 0.0, margin, margin, (char*)"LMgqQ", &strex); - if (err) printf(err); + if (err) printf("%s", err); line_height = (brect[3]-brect[7]) * 12/10; char_width = (brect[2]-brect[6]) / 5; col_number = 0;