Task: Use comma escaping for more command line values in qemu Added virQEMUBuildBufferEscapeComma wherever applicable in src/qemu/qemu_command.c as specified in the Task page. Places where no changes were made: - src->hosts->socket in qemuBuildNetworkDriveURI uses virAsprintf not virBufferAsprintf - TYPE_DEV, TYPE_FILE, TYPE_PIPE, TYPE_UNIX not found in qemuBuildChrArgStr - not applicable on data.nix.path in qemuBuildVhostuserCommandLine - UNCLEAR: places that use strchr in qemuBuildSmartcardCommandLine, can be converted to use virBufferEscape All tests which were passed by an unmodified clone were passed after I made these changes. Once `make syntax-check` gave a false error related to matching of braces in if-else. Your feedback is welcome :) Signed-off-by: Sukrit Bhatnagar <skrtbhtngr@gmail.com> --- src/qemu/qemu_command.c | 74 ++++++++++++++++++++++++++++++------------------- 1 file changed, 45 insertions(+), 29 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index fa0aa5d5c..beabf8837 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -474,8 +474,10 @@ qemuBuildRomStr(virBufferPtr buf, default: break; } - if (info->romfile) - virBufferAsprintf(buf, ",romfile=%s", info->romfile); + if (info->romfile) { + virBufferAddLit(buf, ",romfile="); + virQEMUBuildBufferEscapeComma(buf, info->romfile); + } } return 0; } @@ -2177,11 +2179,15 @@ qemuBuildDriveDevStr(const virDomainDef *def, virBufferAsprintf(&opt, ",wwn=0x%s", disk->wwn); } - if (disk->vendor) - virBufferAsprintf(&opt, ",vendor=%s", disk->vendor); + if (disk->vendor) { + virBufferAddLit(&opt, ",vendor="); + virQEMUBuildBufferEscapeComma(&opt, disk->vendor); + } - if (disk->product) - virBufferAsprintf(&opt, ",product=%s", disk->product); + if (disk->product) { + virBufferAddLit(&opt, ",product="); + virQEMUBuildBufferEscapeComma(&opt, disk->product); + } if (disk->bus == VIR_DOMAIN_DISK_BUS_USB) { if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_USB_STORAGE_REMOVABLE)) { @@ -2418,7 +2424,8 @@ qemuBuildFSStr(virDomainFSDefPtr fs, } virBufferAsprintf(&opt, ",id=%s%s", QEMU_FSDEV_HOST_PREFIX, fs->info.alias); - virBufferAsprintf(&opt, ",path=%s", fs->src->path); + virBufferAddLit(&opt, ",path="); + virQEMUBuildBufferEscapeComma(&opt, fs->src->path); if (fs->readonly) { if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_FSDEV_READONLY)) { @@ -2463,7 +2470,8 @@ qemuBuildFSDevStr(const virDomainDef *def, virBufferAsprintf(&opt, ",id=%s", fs->info.alias); virBufferAsprintf(&opt, ",fsdev=%s%s", QEMU_FSDEV_HOST_PREFIX, fs->info.alias); - virBufferAsprintf(&opt, ",mount_tag=%s", fs->dst); + virBufferAddLit(&opt, ",mount_tag="); + virQEMUBuildBufferEscapeComma(&opt, fs->dst); if (qemuBuildVirtioOptionsStr(&opt, fs->virtio, qemuCaps) < 0) goto error; @@ -3603,10 +3611,9 @@ qemuBuildHostNetStr(virDomainNetDefPtr net, break; case VIR_DOMAIN_NET_TYPE_CLIENT: - virBufferAsprintf(&buf, "socket%cconnect=%s:%d,", - type_sep, - net->data.socket.address, - net->data.socket.port); + virBufferAsprintf(&buf, "socket%cconnect=", type_sep); + virQEMUBuildBufferEscapeComma(&buf, net->data.socket.address); + virBufferAsprintf(&buf, ":%d,", net->data.socket.port); break; case VIR_DOMAIN_NET_TYPE_SERVER: @@ -4858,7 +4865,8 @@ qemuBuildChrChardevFileStr(virLogManagerPtr logManager, virBufferAsprintf(buf, ",%s=%s,%s=on", filearg, fdpath, appendarg); VIR_FREE(fdpath); } else { - virBufferAsprintf(buf, ",%s=%s", filearg, fileval); + virBufferAsprintf(buf, ",%s=", filearg); + virQEMUBuildBufferEscapeComma(buf, fileval); if (appendval != VIR_TRISTATE_SWITCH_ABSENT) { virBufferAsprintf(buf, ",%s=%s", appendarg, virTristateSwitchTypeToString(appendval)); @@ -4916,9 +4924,10 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager, break; case VIR_DOMAIN_CHR_TYPE_DEV: - virBufferAsprintf(&buf, "%s,id=%s,path=%s", + virBufferAsprintf(&buf, "%s,id=%s,path=", STRPREFIX(alias, "parallel") ? "parport" : "tty", - charAlias, dev->data.file.path); + charAlias); + virQEMUBuildBufferEscapeComma(&buf, dev->data.file.path); break; case VIR_DOMAIN_CHR_TYPE_FILE: @@ -4938,8 +4947,8 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager, break; case VIR_DOMAIN_CHR_TYPE_PIPE: - virBufferAsprintf(&buf, "pipe,id=%s,path=%s", charAlias, - dev->data.file.path); + virBufferAsprintf(&buf, "pipe,id=%s,path=", charAlias); + virQEMUBuildBufferEscapeComma(&buf, dev->data.file.path); break; case VIR_DOMAIN_CHR_TYPE_STDIO: @@ -7829,10 +7838,14 @@ qemuBuildGraphicsVNCCommandLine(virQEMUDriverConfigPtr cfg, if (cfg->vncTLS) { virBufferAddLit(&opt, ",tls"); - if (cfg->vncTLSx509verify) - virBufferAsprintf(&opt, ",x509verify=%s", cfg->vncTLSx509certdir); - else - virBufferAsprintf(&opt, ",x509=%s", cfg->vncTLSx509certdir); + if (cfg->vncTLSx509verify) { + virBufferAddLit(&opt, ",x509verify="); + virQEMUBuildBufferEscapeComma(&opt, cfg->vncTLSx509certdir); + } + else { + virBufferAddLit(&opt, ",x509="); + virQEMUBuildBufferEscapeComma(&opt, cfg->vncTLSx509certdir); + } } if (cfg->vncSASL) { @@ -7977,8 +7990,11 @@ qemuBuildGraphicsSPICECommandLine(virQEMUDriverConfigPtr cfg, !cfg->spicePassword) virBufferAddLit(&opt, "disable-ticketing,"); - if (hasSecure) - virBufferAsprintf(&opt, "x509-dir=%s,", cfg->spiceTLSx509certdir); + if (hasSecure) { + virBufferAddLit(&opt, "x509-dir="); + virQEMUBuildBufferEscapeComma(&opt, cfg->spiceTLSx509certdir); + virBufferAddLit(&opt, ","); + } switch (graphics->data.spice.defaultMode) { case VIR_DOMAIN_GRAPHICS_SPICE_CHANNEL_MODE_SECURE: @@ -9463,9 +9479,9 @@ qemuBuildDomainLoaderCommandLine(virCommandPtr cmd, NULL); } - virBufferAsprintf(&buf, - "file=%s,if=pflash,format=raw,unit=%d", - loader->path, unit); + virBufferAddLit(&buf, "file="); + virQEMUBuildBufferEscapeComma(&buf, loader->path); + virBufferAsprintf(&buf, ",if=pflash,format=raw,unit=%d", unit); unit++; if (loader->readonly) { @@ -9478,9 +9494,9 @@ qemuBuildDomainLoaderCommandLine(virCommandPtr cmd, if (loader->nvram) { virBufferFreeAndReset(&buf); - virBufferAsprintf(&buf, - "file=%s,if=pflash,format=raw,unit=%d", - loader->nvram, unit); + virBufferAddLit(&buf, "file="); + virQEMUBuildBufferEscapeComma(&buf, loader->nvram); + virBufferAsprintf(&buf, ",if=pflash,format=raw,unit=%d", unit); virCommandAddArg(cmd, "-drive"); virCommandAddArgBuffer(cmd, &buf); -- 2.16.2